Finding the Fourth Proportional to 2,766.42, 4,146.86 and 1,121.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.42 : 4,146.86 = 1,121.91 : x
2. Step 2: Convert to fraction form
   2,766.42/4,146.86 = 1,121.91/x
3. Step 3: Cross multiply
   2,766.42x = 4,146.86 × 1,121.91
4. Step 4: Simplify right side
   2,766.42x = 4,652,398.09
5. Step 5: Solve for x
   x = 4,652,398.09/2,766.42
6. Step 6: Final answer
   x = 1,681.74