Finding the Fourth Proportional to 2,540.35, 3,505.62 and 1,478.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.35 : 3,505.62 = 1,478.30 : x
2. Step 2: Convert to fraction form
   2,540.35/3,505.62 = 1,478.30/x
3. Step 3: Cross multiply
   2,540.35x = 3,505.62 × 1,478.30
4. Step 4: Simplify right side
   2,540.35x = 5,182,358.05
5. Step 5: Solve for x
   x = 5,182,358.05/2,540.35
6. Step 6: Final answer
   x = 2,040.02