Finding the Fourth Proportional to 1,131,024.57, 1,560,774.33 and 621,723.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131,024.57 : 1,560,774.33 = 621,723.30 : x
2. Step 2: Convert to fraction form
   1,131,024.57/1,560,774.33 = 621,723.30/x
3. Step 3: Cross multiply
   1,131,024.57x = 1,560,774.33 × 621,723.30
4. Step 4: Simplify right side
   1,131,024.57x = 970,369,767,002.89
5. Step 5: Solve for x
   x = 970,369,767,002.89/1,131,024.57
6. Step 6: Final answer
   x = 857,956.40