Finding the Fourth Proportional to 2,511.72, 3,768.50 and 868.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,511.72 : 3,768.50 = 868.44 : x
2. Step 2: Convert to fraction form
   2,511.72/3,768.50 = 868.44/x
3. Step 3: Cross multiply
   2,511.72x = 3,768.50 × 868.44
4. Step 4: Simplify right side
   2,511.72x = 3,272,711.80
5. Step 5: Solve for x
   x = 3,272,711.80/2,511.72
6. Step 6: Final answer
   x = 1,302.98