Answer:
The principal amount necessary to fund is $573.31
Explanation:
Given as :
The quarterly withdrawal amount = A = $850
The time period for withdrawals = t = 9 years
The rate of interest = r = 4.4% compounded quarterly
Let The principal amount necessary to fund = $p
Now, From Compound Interest
Amount = Principal ×

Or, $850 = p ×

Or, $850 = p ×

Or, $850 = p ×

Or, $850 = p × 1.4826
∴ p =

i.e p = $573.31
So,The principal amount necessary to fund = p = $573.31
Hence, The principal amount necessary to fund is $573.31 Answer