Finding the Fourth Proportional to 2,721.20, 3,755.76 and 1,542.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721.20 : 3,755.76 = 1,542.56 : x
2. Step 2: Convert to fraction form
   2,721.20/3,755.76 = 1,542.56/x
3. Step 3: Cross multiply
   2,721.20x = 3,755.76 × 1,542.56
4. Step 4: Simplify right side
   2,721.20x = 5,793,485.15
5. Step 5: Solve for x
   x = 5,793,485.15/2,721.20
6. Step 6: Final answer
   x = 2,129.02