Finding the Fourth Proportional to 2,766.82, 4,148.49 and 917.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.82 : 4,148.49 = 917.45 : x
2. Step 2: Convert to fraction form
   2,766.82/4,148.49 = 917.45/x
3. Step 3: Cross multiply
   2,766.82x = 4,148.49 × 917.45
4. Step 4: Simplify right side
   2,766.82x = 3,806,032.15
5. Step 5: Solve for x
   x = 3,806,032.15/2,766.82
6. Step 6: Final answer
   x = 1,375.60