Finding the Fourth Proportional to 957,499.92, 1,435,876.20 and 417,921.23

Step by Step Solution

1. Step 1: Write the proportion equation
   957,499.92 : 1,435,876.20 = 417,921.23 : x
2. Step 2: Convert to fraction form
   957,499.92/1,435,876.20 = 417,921.23/x
3. Step 3: Cross multiply
   957,499.92x = 1,435,876.20 × 417,921.23
4. Step 4: Simplify right side
   957,499.92x = 600,083,142,019.55
5. Step 5: Solve for x
   x = 600,083,142,019.55/957,499.92
6. Step 6: Final answer
   x = 626,718.74