Finding the Fourth Proportional to 2,515.23, 3,773.16 and 871.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515.23 : 3,773.16 = 871.32 : x
2. Step 2: Convert to fraction form
   2,515.23/3,773.16 = 871.32/x
3. Step 3: Cross multiply
   2,515.23x = 3,773.16 × 871.32
4. Step 4: Simplify right side
   2,515.23x = 3,287,629.77
5. Step 5: Solve for x
   x = 3,287,629.77/2,515.23
6. Step 6: Final answer
   x = 1,307.09