Finding the Fourth Proportional to 905,158.38, 1,248,979.71 and 523,111.38

Step by Step Solution

1. Step 1: Write the proportion equation
   905,158.38 : 1,248,979.71 = 523,111.38 : x
2. Step 2: Convert to fraction form
   905,158.38/1,248,979.71 = 523,111.38/x
3. Step 3: Cross multiply
   905,158.38x = 1,248,979.71 × 523,111.38
4. Step 4: Simplify right side
   905,158.38x = 653,355,499,690.10
5. Step 5: Solve for x
   x = 653,355,499,690.10/905,158.38
6. Step 6: Final answer
   x = 721,813.46