Suppose you take a 15-year mortgage for a house that costs $213,632. Assume the following: The annual interest rate on the mortgage is 4.5%. The bank requires a minimum down payment of 7% of the cost of the house. The annual property tax is 1.2% of the cost of the house. The annual homeowner's insurance is $632. The monthly PMI is $54. If you make the minimum down payment, what is the minimum gross monthly salary you must earn in order to satisfy the 28% rule