Finding the Fourth Proportional to 2,510.57, 3,766.12 and 867.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.57 : 3,766.12 = 867.12 : x
2. Step 2: Convert to fraction form
   2,510.57/3,766.12 = 867.12/x
3. Step 3: Cross multiply
   2,510.57x = 3,766.12 × 867.12
4. Step 4: Simplify right side
   2,510.57x = 3,265,677.97
5. Step 5: Solve for x
   x = 3,265,677.97/2,510.57
6. Step 6: Final answer
   x = 1,300.77