JARDINE Strategic Holdings has increased net profit by 12 per cent to US$262.3 million for the 12 months ending December 31. Earnings per share on a fully diluted basis were up seven per cent to 32.18 US cents. An extraordinary gain of US$58.9 million resulted from Dairy Farm International transferring assets into a joint venture with Nestle. Chairman Henry Keswick said: ''Despite current political uncertainty in Hongkong and slow economic growth in Japan and Europe, the diversity of the group's businesses in the most rapidly growing area of the world makes us confident about the future.'' The total dividend for the year was set at 11.5 US cents per ordinary share. There will also be a preferential dividend at the rate of 7.5 per cent a year on the company's 250,000 outstanding convertible preference shares. Jardine Strategic has also announced a US$358.5 million issue of convertible preference shares. The cash-raising is intended to enable the Jardine group investment holding company to refinance its recent acquisition of 16 per cent of Singapore-listed Cycle and Carriage. The bill for the preference share payments this year amounts to US$11.6 million. The payout on the ordinary shares amounts to US$83.5 million. Parent company Jardine Matheson has agreed to subscribe for its full entitlement in the Jardine Strategic issue and to participate in the underwriting of the balance. The acquisition of the 16 per cent stake in Cycle and Carriage was completed over the period. ''With its interests in motor-vehicle distribution, retailing, and property and hotel ownership, Cycle and Carriage's activities are concentrated in areas where Jardine Matheson group companies have extensive expertise,'' said Mr Keswick. At December 31, 1992 net assets per ordinary share were 4.29 US cents, up 24 per cent.