Finding the Fourth Proportional to 2,766.56, 4,148.67 and 917.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.56 : 4,148.67 = 917.18 : x
2. Step 2: Convert to fraction form
   2,766.56/4,148.67 = 917.18/x
3. Step 3: Cross multiply
   2,766.56x = 4,148.67 × 917.18
4. Step 4: Simplify right side
   2,766.56x = 3,805,077.15
5. Step 5: Solve for x
   x = 3,805,077.15/2,766.56
6. Step 6: Final answer
   x = 1,375.38