Finding the Fourth Proportional to 915,630.28, 1,263,700.54 and 507,822.82

Step by Step Solution

1. Step 1: Write the proportion equation
   915,630.28 : 1,263,700.54 = 507,822.82 : x
2. Step 2: Convert to fraction form
   915,630.28/1,263,700.54 = 507,822.82/x
3. Step 3: Cross multiply
   915,630.28x = 1,263,700.54 × 507,822.82
4. Step 4: Simplify right side
   915,630.28x = 641,735,969,333.85
5. Step 5: Solve for x
   x = 641,735,969,333.85/915,630.28
6. Step 6: Final answer
   x = 700,868.01