Finding the Fourth Proportional to 2,766.88, 4,150.43 and 918.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.88 : 4,150.43 = 918.15 : x
2. Step 2: Convert to fraction form
   2,766.88/4,150.43 = 918.15/x
3. Step 3: Cross multiply
   2,766.88x = 4,150.43 × 918.15
4. Step 4: Simplify right side
   2,766.88x = 3,810,717.30
5. Step 5: Solve for x
   x = 3,810,717.30/2,766.88
6. Step 6: Final answer
   x = 1,377.26