Finding the Fourth Proportional to 1,540.27, 2,124.39 and 1,042.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540.27 : 2,124.39 = 1,042.82 : x
2. Step 2: Convert to fraction form
   1,540.27/2,124.39 = 1,042.82/x
3. Step 3: Cross multiply
   1,540.27x = 2,124.39 × 1,042.82
4. Step 4: Simplify right side
   1,540.27x = 2,215,356.38
5. Step 5: Solve for x
   x = 2,215,356.38/1,540.27
6. Step 6: Final answer
   x = 1,438.29