Finding the Fourth Proportional to 1,048,158.42, 1,571,116.50 and 478,686.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,048,158.42 : 1,571,116.50 = 478,686.18 : x
2. Step 2: Convert to fraction form
   1,048,158.42/1,571,116.50 = 478,686.18/x
3. Step 3: Cross multiply
   1,048,158.42x = 1,571,116.50 × 478,686.18
4. Step 4: Simplify right side
   1,048,158.42x = 752,071,755,719.97
5. Step 5: Solve for x
   x = 752,071,755,719.97/1,048,158.42
6. Step 6: Final answer
   x = 717,517.26