Finding the Fourth Proportional to 2,763.97, 4,142.89 and 1,120.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,763.97 : 4,142.89 = 1,120.03 : x
2. Step 2: Convert to fraction form
   2,763.97/4,142.89 = 1,120.03/x
3. Step 3: Cross multiply
   2,763.97x = 4,142.89 × 1,120.03
4. Step 4: Simplify right side
   2,763.97x = 4,640,150.73
5. Step 5: Solve for x
   x = 4,640,150.73/2,763.97
6. Step 6: Final answer
   x = 1,678.80