Finding the Fourth Proportional to 1,540.43, 2,124.59 and 1,008.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540.43 : 2,124.59 = 1,008.71 : x
2. Step 2: Convert to fraction form
   1,540.43/2,124.59 = 1,008.71/x
3. Step 3: Cross multiply
   1,540.43x = 2,124.59 × 1,008.71
4. Step 4: Simplify right side
   1,540.43x = 2,143,079.51
5. Step 5: Solve for x
   x = 2,143,079.51/1,540.43
6. Step 6: Final answer
   x = 1,391.23