Answer:
The required savings % to achieve a Future Value of $3.4 million i s 8.55%
By the 37th Year, he would have saved $338,349 which would have accumulated to $3.4 million on the basis of a 12% compounded interest rate yearly.
Explanation:
Using compounded interest rate; A= P(1 + r/n)^nt
A = Final Amount
P = Invested Amount
r= annualized interest rate
n = number of times interest is applied by time period
t = period investment is held for
Considering that our Invested Amount (P) is shifting every new Year, I have applied in tabular form the future value of each Years investment using the above formular.
And by having a uniform savings % reinvested back into the Pool, at the end of the 37th year our investment valuation ends at $3.4M
The breakdown is found in the attached document.