Finding the Fourth Proportional to 2,661.38, 3,672.71 and 1,542.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.38 : 3,672.71 = 1,542.39 : x
2. Step 2: Convert to fraction form
   2,661.38/3,672.71 = 1,542.39/x
3. Step 3: Cross multiply
   2,661.38x = 3,672.71 × 1,542.39
4. Step 4: Simplify right side
   2,661.38x = 5,664,751.18
5. Step 5: Solve for x
   x = 5,664,751.18/2,661.38
6. Step 6: Final answer
   x = 2,128.50