Finding the Fourth Proportional to 3,761.52, 5,640.84 and 2,220.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,761.52 : 5,640.84 = 2,220.72 : x
2. Step 2: Convert to fraction form
   3,761.52/5,640.84 = 2,220.72/x
3. Step 3: Cross multiply
   3,761.52x = 5,640.84 × 2,220.72
4. Step 4: Simplify right side
   3,761.52x = 12,526,726.20
5. Step 5: Solve for x
   x = 12,526,726.20/3,761.52
6. Step 6: Final answer
   x = 3,330.23