Finding the Fourth Proportional to 2,540.44, 3,505.51 and 1,478.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.44 : 3,505.51 = 1,478.05 : x
2. Step 2: Convert to fraction form
   2,540.44/3,505.51 = 1,478.05/x
3. Step 3: Cross multiply
   2,540.44x = 3,505.51 × 1,478.05
4. Step 4: Simplify right side
   2,540.44x = 5,181,331.86
5. Step 5: Solve for x
   x = 5,181,331.86/2,540.44
6. Step 6: Final answer
   x = 2,039.54