Finding the Fourth Proportional to 2,589.32, 3,905.15 and 2,543.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589.32 : 3,905.15 = 2,543.24 : x
2. Step 2: Convert to fraction form
   2,589.32/3,905.15 = 2,543.24/x
3. Step 3: Cross multiply
   2,589.32x = 3,905.15 × 2,543.24
4. Step 4: Simplify right side
   2,589.32x = 9,931,733.69
5. Step 5: Solve for x
   x = 9,931,733.69/2,589.32
6. Step 6: Final answer
   x = 3,835.65