Finding the Fourth Proportional to 2,661.18, 3,672.52 and 1,542.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.18 : 3,672.52 = 1,542.12 : x
2. Step 2: Convert to fraction form
   2,661.18/3,672.52 = 1,542.12/x
3. Step 3: Cross multiply
   2,661.18x = 3,672.52 × 1,542.12
4. Step 4: Simplify right side
   2,661.18x = 5,663,466.54
5. Step 5: Solve for x
   x = 5,663,466.54/2,661.18
6. Step 6: Final answer
   x = 2,128.18