Finding the Fourth Proportional to 648,498.10, 973,913.55 and 471,205.30

Step by Step Solution

1. Step 1: Write the proportion equation
   648,498.10 : 973,913.55 = 471,205.30 : x
2. Step 2: Convert to fraction form
   648,498.10/973,913.55 = 471,205.30/x
3. Step 3: Cross multiply
   648,498.10x = 973,913.55 × 471,205.30
4. Step 4: Simplify right side
   648,498.10x = 458,913,226,501.82
5. Step 5: Solve for x
   x = 458,913,226,501.82/648,498.10
6. Step 6: Final answer
   x = 707,655.47