Finding the Fourth Proportional to 1,105,147.27, 1,524,979.56 and 621,702.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,147.27 : 1,524,979.56 = 621,702.37 : x
2. Step 2: Convert to fraction form
   1,105,147.27/1,524,979.56 = 621,702.37/x
3. Step 3: Cross multiply
   1,105,147.27x = 1,524,979.56 × 621,702.37
4. Step 4: Simplify right side
   1,105,147.27x = 948,083,406,653.56
5. Step 5: Solve for x
   x = 948,083,406,653.56/1,105,147.27
6. Step 6: Final answer
   x = 857,879.70