Finding the Fourth Proportional to 2,540.11, 3,504.72 and 1,478.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.11 : 3,504.72 = 1,478.05 : x
2. Step 2: Convert to fraction form
   2,540.11/3,504.72 = 1,478.05/x
3. Step 3: Cross multiply
   2,540.11x = 3,504.72 × 1,478.05
4. Step 4: Simplify right side
   2,540.11x = 5,180,151.40
5. Step 5: Solve for x
   x = 5,180,151.40/2,540.11
6. Step 6: Final answer
   x = 2,039.34