Finding the Fourth Proportional to 1,540.30, 2,124.82 and 1,042.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540.30 : 2,124.82 = 1,042.76 : x
2. Step 2: Convert to fraction form
   1,540.30/2,124.82 = 1,042.76/x
3. Step 3: Cross multiply
   1,540.30x = 2,124.82 × 1,042.76
4. Step 4: Simplify right side
   1,540.30x = 2,215,674.70
5. Step 5: Solve for x
   x = 2,215,674.70/1,540.30
6. Step 6: Final answer
   x = 1,438.47