Finding the Fourth Proportional to 2,764.57, 4,146.83 and 1,120.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,764.57 : 4,146.83 = 1,120.72 : x
2. Step 2: Convert to fraction form
   2,764.57/4,146.83 = 1,120.72/x
3. Step 3: Cross multiply
   2,764.57x = 4,146.83 × 1,120.72
4. Step 4: Simplify right side
   2,764.57x = 4,647,442.67
5. Step 5: Solve for x
   x = 4,647,442.67/2,764.57
6. Step 6: Final answer
   x = 1,681.07