Finding the Fourth Proportional to 1,105,146.27, 1,524,978.18 and 621,701.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,146.27 : 1,524,978.18 = 621,701.37 : x
2. Step 2: Convert to fraction form
   1,105,146.27/1,524,978.18 = 621,701.37/x
3. Step 3: Cross multiply
   1,105,146.27x = 1,524,978.18 × 621,701.37
4. Step 4: Simplify right side
   1,105,146.27x = 948,081,023,726.11
5. Step 5: Solve for x
   x = 948,081,023,726.11/1,105,146.27
6. Step 6: Final answer
   x = 857,878.32