Finding the Fourth Proportional to 2,514.56, 3,771.88 and 871.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,514.56 : 3,771.88 = 871.16 : x
2. Step 2: Convert to fraction form
   2,514.56/3,771.88 = 871.16/x
3. Step 3: Cross multiply
   2,514.56x = 3,771.88 × 871.16
4. Step 4: Simplify right side
   2,514.56x = 3,285,892.12
5. Step 5: Solve for x
   x = 3,285,892.12/2,514.56
6. Step 6: Final answer
   x = 1,306.75