Finding the Fourth Proportional to 1,157,981.76, 1,598,018.58 and 641,744.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,157,981.76 : 1,598,018.58 = 641,744.10 : x
2. Step 2: Convert to fraction form
   1,157,981.76/1,598,018.58 = 641,744.10/x
3. Step 3: Cross multiply
   1,157,981.76x = 1,598,018.58 × 641,744.10
4. Step 4: Simplify right side
   1,157,981.76x = 1,025,518,995,405.38
5. Step 5: Solve for x
   x = 1,025,518,995,405.38/1,157,981.76
6. Step 6: Final answer
   x = 885,608.94