Finding the Fourth Proportional to 2,766.57, 4,149.82 and 1,122.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.57 : 4,149.82 = 1,122.72 : x
2. Step 2: Convert to fraction form
   2,766.57/4,149.82 = 1,122.72/x
3. Step 3: Cross multiply
   2,766.57x = 4,149.82 × 1,122.72
4. Step 4: Simplify right side
   2,766.57x = 4,659,085.91
5. Step 5: Solve for x
   x = 4,659,085.91/2,766.57
6. Step 6: Final answer
   x = 1,684.07