Finding the Fourth Proportional to 2,310.72, 3,180.42 and 2,089.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.72 : 3,180.42 = 2,089.18 : x
2. Step 2: Convert to fraction form
   2,310.72/3,180.42 = 2,089.18/x
3. Step 3: Cross multiply
   2,310.72x = 3,180.42 × 2,089.18
4. Step 4: Simplify right side
   2,310.72x = 6,644,469.86
5. Step 5: Solve for x
   x = 6,644,469.86/2,310.72
6. Step 6: Final answer
   x = 2,875.50