Finding the Fourth Proportional to 1,061,577.48, 1,590,947.49 and 387,025.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061,577.48 : 1,590,947.49 = 387,025.14 : x
2. Step 2: Convert to fraction form
   1,061,577.48/1,590,947.49 = 387,025.14/x
3. Step 3: Cross multiply
   1,061,577.48x = 1,590,947.49 × 387,025.14
4. Step 4: Simplify right side
   1,061,577.48x = 615,736,675,049.90
5. Step 5: Solve for x
   x = 615,736,675,049.90/1,061,577.48
6. Step 6: Final answer
   x = 580,020.48