Finding the Fourth Proportional to 745,123.32, 1,111,958.82 and 665,403.12

Step by Step Solution

1. Step 1: Write the proportion equation
   745,123.32 : 1,111,958.82 = 665,403.12 : x
2. Step 2: Convert to fraction form
   745,123.32/1,111,958.82 = 665,403.12/x
3. Step 3: Cross multiply
   745,123.32x = 1,111,958.82 × 665,403.12
4. Step 4: Simplify right side
   745,123.32x = 739,900,868,139.52
5. Step 5: Solve for x
   x = 739,900,868,139.52/745,123.32
6. Step 6: Final answer
   x = 992,991.16