Finding the Fourth Proportional to 2,543.95, 3,510.98 and 1,425.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543.95 : 3,510.98 = 1,425.31 : x
2. Step 2: Convert to fraction form
   2,543.95/3,510.98 = 1,425.31/x
3. Step 3: Cross multiply
   2,543.95x = 3,510.98 × 1,425.31
4. Step 4: Simplify right side
   2,543.95x = 5,004,234.90
5. Step 5: Solve for x
   x = 5,004,234.90/2,543.95
6. Step 6: Final answer
   x = 1,967.11