Finding the Fourth Proportional to 2,661.60, 3,672.72 and 1,542.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.60 : 3,672.72 = 1,542.84 : x
2. Step 2: Convert to fraction form
   2,661.60/3,672.72 = 1,542.84/x
3. Step 3: Cross multiply
   2,661.60x = 3,672.72 × 1,542.84
4. Step 4: Simplify right side
   2,661.60x = 5,666,419.32
5. Step 5: Solve for x
   x = 5,666,419.32/2,661.60
6. Step 6: Final answer
   x = 2,128.95