Finding the Fourth Proportional to 2,766.48, 4,149.76 and 1,122.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.48 : 4,149.76 = 1,122.72 : x
2. Step 2: Convert to fraction form
   2,766.48/4,149.76 = 1,122.72/x
3. Step 3: Cross multiply
   2,766.48x = 4,149.76 × 1,122.72
4. Step 4: Simplify right side
   2,766.48x = 4,659,018.55
5. Step 5: Solve for x
   x = 4,659,018.55/2,766.48
6. Step 6: Final answer
   x = 1,684.10