Finding the Fourth Proportional to 2,661.71, 3,672.35 and 1,542.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.71 : 3,672.35 = 1,542.43 : x
2. Step 2: Convert to fraction form
   2,661.71/3,672.35 = 1,542.43/x
3. Step 3: Cross multiply
   2,661.71x = 3,672.35 × 1,542.43
4. Step 4: Simplify right side
   2,661.71x = 5,664,348.14
5. Step 5: Solve for x
   x = 5,664,348.14/2,661.71
6. Step 6: Final answer
   x = 2,128.09