Finding the Fourth Proportional to 899,017.72, 1,240,682.30 and 517,044.94

Step by Step Solution

1. Step 1: Write the proportion equation
   899,017.72 : 1,240,682.30 = 517,044.94 : x
2. Step 2: Convert to fraction form
   899,017.72/1,240,682.30 = 517,044.94/x
3. Step 3: Cross multiply
   899,017.72x = 1,240,682.30 × 517,044.94
4. Step 4: Simplify right side
   899,017.72x = 641,488,501,614.55
5. Step 5: Solve for x
   x = 641,488,501,614.55/899,017.72
6. Step 6: Final answer
   x = 713,543.78