Finding the Fourth Proportional to 2,799.54, 3,863.42 and 1,540.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,799.54 : 3,863.42 = 1,540.64 : x
2. Step 2: Convert to fraction form
   2,799.54/3,863.42 = 1,540.64/x
3. Step 3: Cross multiply
   2,799.54x = 3,863.42 × 1,540.64
4. Step 4: Simplify right side
   2,799.54x = 5,952,112.37
5. Step 5: Solve for x
   x = 5,952,112.37/2,799.54
6. Step 6: Final answer
   x = 2,126.10