Finding the Fourth Proportional to 2,542.05, 3,507.92 and 1,422.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,542.05 : 3,507.92 = 1,422.78 : x
2. Step 2: Convert to fraction form
   2,542.05/3,507.92 = 1,422.78/x
3. Step 3: Cross multiply
   2,542.05x = 3,507.92 × 1,422.78
4. Step 4: Simplify right side
   2,542.05x = 4,990,983.48
5. Step 5: Solve for x
   x = 4,990,983.48/2,542.05
6. Step 6: Final answer
   x = 1,963.37