Finding the Fourth Proportional to 1,040,796.90, 1,560,158.55 and 478,851.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040,796.90 : 1,560,158.55 = 478,851.30 : x
2. Step 2: Convert to fraction form
   1,040,796.90/1,560,158.55 = 478,851.30/x
3. Step 3: Cross multiply
   1,040,796.90x = 1,560,158.55 × 478,851.30
4. Step 4: Simplify right side
   1,040,796.90x = 747,083,949,873.62
5. Step 5: Solve for x
   x = 747,083,949,873.62/1,040,796.90
6. Step 6: Final answer
   x = 717,799.94