Finding the Fourth Proportional to 2,543.78, 3,501.96 and 2,281.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543.78 : 3,501.96 = 2,281.34 : x
2. Step 2: Convert to fraction form
   2,543.78/3,501.96 = 2,281.34/x
3. Step 3: Cross multiply
   2,543.78x = 3,501.96 × 2,281.34
4. Step 4: Simplify right side
   2,543.78x = 7,989,161.43
5. Step 5: Solve for x
   x = 7,989,161.43/2,543.78
6. Step 6: Final answer
   x = 3,140.67