Finding the Fourth Proportional to 748,350.48, 1,123,878.72 and 691,363.05

Step by Step Solution

1. Step 1: Write the proportion equation
   748,350.48 : 1,123,878.72 = 691,363.05 : x
2. Step 2: Convert to fraction form
   748,350.48/1,123,878.72 = 691,363.05/x
3. Step 3: Cross multiply
   748,350.48x = 1,123,878.72 × 691,363.05
4. Step 4: Simplify right side
   748,350.48x = 777,008,219,689.30
5. Step 5: Solve for x
   x = 777,008,219,689.30/748,350.48
6. Step 6: Final answer
   x = 1,038,294.54