Finding the Fourth Proportional to 925,561.89, 1,277,271.72 and 517,662.09

Step by Step Solution

1. Step 1: Write the proportion equation
   925,561.89 : 1,277,271.72 = 517,662.09 : x
2. Step 2: Convert to fraction form
   925,561.89/1,277,271.72 = 517,662.09/x
3. Step 3: Cross multiply
   925,561.89x = 1,277,271.72 × 517,662.09
4. Step 4: Simplify right side
   925,561.89x = 661,195,148,073.10
5. Step 5: Solve for x
   x = 661,195,148,073.10/925,561.89
6. Step 6: Final answer
   x = 714,371.62