Finding the Fourth Proportional to 2,661.42, 3,672.72 and 1,542.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.42 : 3,672.72 = 1,542.28 : x
2. Step 2: Convert to fraction form
   2,661.42/3,672.72 = 1,542.28/x
3. Step 3: Cross multiply
   2,661.42x = 3,672.72 × 1,542.28
4. Step 4: Simplify right side
   2,661.42x = 5,664,362.60
5. Step 5: Solve for x
   x = 5,664,362.60/2,661.42
6. Step 6: Final answer
   x = 2,128.32