Finding the Fourth Proportional to 2,763.83, 4,145.57 and 1,120.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,763.83 : 4,145.57 = 1,120.50 : x
2. Step 2: Convert to fraction form
   2,763.83/4,145.57 = 1,120.50/x
3. Step 3: Cross multiply
   2,763.83x = 4,145.57 × 1,120.50
4. Step 4: Simplify right side
   2,763.83x = 4,645,111.19
5. Step 5: Solve for x
   x = 4,645,111.19/2,763.83
6. Step 6: Final answer
   x = 1,680.68