Finding the Fourth Proportional to 2,542.86, 3,509.30 and 1,423.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,542.86 : 3,509.30 = 1,423.87 : x
2. Step 2: Convert to fraction form
   2,542.86/3,509.30 = 1,423.87/x
3. Step 3: Cross multiply
   2,542.86x = 3,509.30 × 1,423.87
4. Step 4: Simplify right side
   2,542.86x = 4,996,781.78
5. Step 5: Solve for x
   x = 4,996,781.78/2,542.86
6. Step 6: Final answer
   x = 1,965.02