Finding the Fourth Proportional to 1,312,303.52, 1,810,978.88 and 708,691.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312,303.52 : 1,810,978.88 = 708,691.52 : x
2. Step 2: Convert to fraction form
   1,312,303.52/1,810,978.88 = 708,691.52/x
3. Step 3: Cross multiply
   1,312,303.52x = 1,810,978.88 × 708,691.52
4. Step 4: Simplify right side
   1,312,303.52x = 1,283,425,375,155.10
5. Step 5: Solve for x
   x = 1,283,425,375,155.10/1,312,303.52
6. Step 6: Final answer
   x = 977,994.31