Finding the Fourth Proportional to 1,191,123.92, 1,643,757.72 and 647,264.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191,123.92 : 1,643,757.72 = 647,264.24 : x
2. Step 2: Convert to fraction form
   1,191,123.92/1,643,757.72 = 647,264.24/x
3. Step 3: Cross multiply
   1,191,123.92x = 1,643,757.72 × 647,264.24
4. Step 4: Simplify right side
   1,191,123.92x = 1,063,945,591,379.93
5. Step 5: Solve for x
   x = 1,063,945,591,379.93/1,191,123.92
6. Step 6: Final answer
   x = 893,228.30