Finding the Fourth Proportional to 2,660.57, 3,672.23 and 1,542.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660.57 : 3,672.23 = 1,542.13 : x
2. Step 2: Convert to fraction form
   2,660.57/3,672.23 = 1,542.13/x
3. Step 3: Cross multiply
   2,660.57x = 3,672.23 × 1,542.13
4. Step 4: Simplify right side
   2,660.57x = 5,663,050.72
5. Step 5: Solve for x
   x = 5,663,050.72/2,660.57
6. Step 6: Final answer
   x = 2,128.51