Finding the Fourth Proportional to 2,081.75, 2,872.82 and 1,150.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.75 : 2,872.82 = 1,150.31 : x
2. Step 2: Convert to fraction form
   2,081.75/2,872.82 = 1,150.31/x
3. Step 3: Cross multiply
   2,081.75x = 2,872.82 × 1,150.31
4. Step 4: Simplify right side
   2,081.75x = 3,304,627.82
5. Step 5: Solve for x
   x = 3,304,627.82/2,081.75
6. Step 6: Final answer
   x = 1,587.43