Finding the Fourth Proportional to 2,866.17, 4,299.72 and 918.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,866.17 : 4,299.72 = 918.25 : x
2. Step 2: Convert to fraction form
   2,866.17/4,299.72 = 918.25/x
3. Step 3: Cross multiply
   2,866.17x = 4,299.72 × 918.25
4. Step 4: Simplify right side
   2,866.17x = 3,948,217.89
5. Step 5: Solve for x
   x = 3,948,217.89/2,866.17
6. Step 6: Final answer
   x = 1,377.52