King & Son Ltd. is currently trading for $28 per share. The stock pays no dividends. A one-year European put option on King & Son Ltd. with a strike price of $31 is currently trading for $2.87. If the risk-free interest rate is 6% per year, then the price of a one-year European call option on King & Son Ltd. with a strike price of $31 will be closest to $_____. (Only input numbers as your answer, i.e. no dollar sign. Round your answer to two decimal places.)