Finding the Fourth Proportional to 915,401.71, 1,263,294.30 and 507,477.61

Step by Step Solution

1. Step 1: Write the proportion equation
   915,401.71 : 1,263,294.30 = 507,477.61 : x
2. Step 2: Convert to fraction form
   915,401.71/1,263,294.30 = 507,477.61/x
3. Step 3: Cross multiply
   915,401.71x = 1,263,294.30 × 507,477.61
4. Step 4: Simplify right side
   915,401.71x = 641,093,572,090.62
5. Step 5: Solve for x
   x = 641,093,572,090.62/915,401.71
6. Step 6: Final answer
   x = 700,341.24