Finding the Fourth Proportional to 2,610,319.72, 3,915,689.72 and 991,863.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610,319.72 : 3,915,689.72 = 991,863.52 : x
2. Step 2: Convert to fraction form
   2,610,319.72/3,915,689.72 = 991,863.52/x
3. Step 3: Cross multiply
   2,610,319.72x = 3,915,689.72 × 991,863.52
4. Step 4: Simplify right side
   2,610,319.72x = 3,883,829,788,907.01
5. Step 5: Solve for x
   x = 3,883,829,788,907.01/2,610,319.72
6. Step 6: Final answer
   x = 1,487,875.13