Finding the Fourth Proportional to 2,511.27, 3,767.31 and 868.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,511.27 : 3,767.31 = 868.05 : x
2. Step 2: Convert to fraction form
   2,511.27/3,767.31 = 868.05/x
3. Step 3: Cross multiply
   2,511.27x = 3,767.31 × 868.05
4. Step 4: Simplify right side
   2,511.27x = 3,270,213.45
5. Step 5: Solve for x
   x = 3,270,213.45/2,511.27
6. Step 6: Final answer
   x = 1,302.21