Finding the Fourth Proportional to 648,493.10, 973,906.05 and 471,200.30

Step by Step Solution

1. Step 1: Write the proportion equation
   648,493.10 : 973,906.05 = 471,200.30 : x
2. Step 2: Convert to fraction form
   648,493.10/973,906.05 = 471,200.30/x
3. Step 3: Cross multiply
   648,493.10x = 973,906.05 × 471,200.30
4. Step 4: Simplify right side
   648,493.10x = 458,904,822,931.82
5. Step 5: Solve for x
   x = 458,904,822,931.82/648,493.10
6. Step 6: Final answer
   x = 707,647.97