Finding the Fourth Proportional to 2,543.28, 3,501.27 and 2,280.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543.28 : 3,501.27 = 2,280.84 : x
2. Step 2: Convert to fraction form
   2,543.28/3,501.27 = 2,280.84/x
3. Step 3: Cross multiply
   2,543.28x = 3,501.27 × 2,280.84
4. Step 4: Simplify right side
   2,543.28x = 7,985,836.67
5. Step 5: Solve for x
   x = 7,985,836.67/2,543.28
6. Step 6: Final answer
   x = 3,139.98