Finding the Fourth Proportional to 2,661.61, 3,673.06 and 1,542.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.61 : 3,673.06 = 1,542.63 : x
2. Step 2: Convert to fraction form
   2,661.61/3,673.06 = 1,542.63/x
3. Step 3: Cross multiply
   2,661.61x = 3,673.06 × 1,542.63
4. Step 4: Simplify right side
   2,661.61x = 5,666,168.69
5. Step 5: Solve for x
   x = 5,666,168.69/2,661.61
6. Step 6: Final answer
   x = 2,128.85