Finding the Fourth Proportional to 2,661.59, 3,673.21 and 1,542.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.59 : 3,673.21 = 1,542.55 : x
2. Step 2: Convert to fraction form
   2,661.59/3,673.21 = 1,542.55/x
3. Step 3: Cross multiply
   2,661.59x = 3,673.21 × 1,542.55
4. Step 4: Simplify right side
   2,661.59x = 5,666,110.09
5. Step 5: Solve for x
   x = 5,666,110.09/2,661.59
6. Step 6: Final answer
   x = 2,128.84