Finding the Fourth Proportional to 1,306.77, 1,960.72 and 868.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,306.77 : 1,960.72 = 868.18 : x
2. Step 2: Convert to fraction form
   1,306.77/1,960.72 = 868.18/x
3. Step 3: Cross multiply
   1,306.77x = 1,960.72 × 868.18
4. Step 4: Simplify right side
   1,306.77x = 1,702,257.89
5. Step 5: Solve for x
   x = 1,702,257.89/1,306.77
6. Step 6: Final answer
   x = 1,302.65