Finding the Fourth Proportional to 2,514.74, 3,772.38 and 871.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,514.74 : 3,772.38 = 871.10 : x
2. Step 2: Convert to fraction form
   2,514.74/3,772.38 = 871.10/x
3. Step 3: Cross multiply
   2,514.74x = 3,772.38 × 871.10
4. Step 4: Simplify right side
   2,514.74x = 3,286,120.22
5. Step 5: Solve for x
   x = 3,286,120.22/2,514.74
6. Step 6: Final answer
   x = 1,306.74