Finding the Fourth Proportional to 2,328.20, 3,209.46 and 1,540.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.20 : 3,209.46 = 1,540.88 : x
2. Step 2: Convert to fraction form
   2,328.20/3,209.46 = 1,540.88/x
3. Step 3: Cross multiply
   2,328.20x = 3,209.46 × 1,540.88
4. Step 4: Simplify right side
   2,328.20x = 4,945,392.72
5. Step 5: Solve for x
   x = 4,945,392.72/2,328.20
6. Step 6: Final answer
   x = 2,124.13