12. You plan on saving money for retirement in 3H years {t=3) at which time, you wish to have saved $1,,{}{}. In order to do this, you plan on depositing $1, into the bank for IE! years starting next year (last $1,{}{} deposit at t=1). And then deposit $x every year aer that until your retirement day (last deposit of $1: at t=3). If the interest rate is 6% per annum, what is the 3x you must deposit