Finding the Fourth Proportional to 1,131,112.32, 1,560,964.80 and 621,827.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131,112.32 : 1,560,964.80 = 621,827.52 : x
2. Step 2: Convert to fraction form
   1,131,112.32/1,560,964.80 = 621,827.52/x
3. Step 3: Cross multiply
   1,131,112.32x = 1,560,964.80 × 621,827.52
4. Step 4: Simplify right side
   1,131,112.32x = 970,650,870,391.30
5. Step 5: Solve for x
   x = 970,650,870,391.30/1,131,112.32
6. Step 6: Final answer
   x = 858,138.36