Kito opened an RRSP deposit account on December 1, 2008, with a deposit of $900. He added $900 on August 1, 2010, and $900 on December 1, 2012. How much is in his account on February 1, 2016, if the deposit earns 7.2% p.a. compounded monthly?

The amount in the account is $____.

(Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)

Please explain step by step.