Finding the Fourth Proportional to 2,513.62, 3,771.45 and 871.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,513.62 : 3,771.45 = 871.32 : x
2. Step 2: Convert to fraction form
   2,513.62/3,771.45 = 871.32/x
3. Step 3: Cross multiply
   2,513.62x = 3,771.45 × 871.32
4. Step 4: Simplify right side
   2,513.62x = 3,286,139.81
5. Step 5: Solve for x
   x = 3,286,139.81/2,513.62
6. Step 6: Final answer
   x = 1,307.33