Finding the Fourth Proportional to 2,378.38, 3,281.37 and 1,540.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,378.38 : 3,281.37 = 1,540.15 : x
2. Step 2: Convert to fraction form
   2,378.38/3,281.37 = 1,540.15/x
3. Step 3: Cross multiply
   2,378.38x = 3,281.37 × 1,540.15
4. Step 4: Simplify right side
   2,378.38x = 5,053,802.01
5. Step 5: Solve for x
   x = 5,053,802.01/2,378.38
6. Step 6: Final answer
   x = 2,124.89