Finding the Fourth Proportional to 2,108.57, 3,159.24 and 1,491.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.57 : 3,159.24 = 1,491.24 : x
2. Step 2: Convert to fraction form
   2,108.57/3,159.24 = 1,491.24/x
3. Step 3: Cross multiply
   2,108.57x = 3,159.24 × 1,491.24
4. Step 4: Simplify right side
   2,108.57x = 4,711,191.31
5. Step 5: Solve for x
   x = 4,711,191.31/2,108.57
6. Step 6: Final answer
   x = 2,234.31