Finding the Fourth Proportional to 2,540.79, 3,506.31 and 1,478.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.79 : 3,506.31 = 1,478.82 : x
2. Step 2: Convert to fraction form
   2,540.79/3,506.31 = 1,478.82/x
3. Step 3: Cross multiply
   2,540.79x = 3,506.31 × 1,478.82
4. Step 4: Simplify right side
   2,540.79x = 5,185,201.35
5. Step 5: Solve for x
   x = 5,185,201.35/2,540.79
6. Step 6: Final answer
   x = 2,040.78