Finding the Fourth Proportional to 1,061,490.08, 1,591,278.52 and 387,098.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061,490.08 : 1,591,278.52 = 387,098.16 : x
2. Step 2: Convert to fraction form
   1,061,490.08/1,591,278.52 = 387,098.16/x
3. Step 3: Cross multiply
   1,061,490.08x = 1,591,278.52 × 387,098.16
4. Step 4: Simplify right side
   1,061,490.08x = 615,980,987,139.52
5. Step 5: Solve for x
   x = 615,980,987,139.52/1,061,490.08
6. Step 6: Final answer
   x = 580,298.39