Finding the Fourth Proportional to 1,105,193.52, 1,525,104.72 and 621,779.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,193.52 : 1,525,104.72 = 621,779.04 : x
2. Step 2: Convert to fraction form
   1,105,193.52/1,525,104.72 = 621,779.04/x
3. Step 3: Cross multiply
   1,105,193.52x = 1,525,104.72 × 621,779.04
4. Step 4: Simplify right side
   1,105,193.52x = 948,278,148,701.07
5. Step 5: Solve for x
   x = 948,278,148,701.07/1,105,193.52
6. Step 6: Final answer
   x = 858,020.00