Finding the Fourth Proportional to 2,766.07, 4,149.74 and 917.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.07 : 4,149.74 = 917.05 : x
2. Step 2: Convert to fraction form
   2,766.07/4,149.74 = 917.05/x
3. Step 3: Cross multiply
   2,766.07x = 4,149.74 × 917.05
4. Step 4: Simplify right side
   2,766.07x = 3,805,500.61
5. Step 5: Solve for x
   x = 3,805,500.61/2,766.07
6. Step 6: Final answer
   x = 1,375.78