Finding the Fourth Proportional to 2,680.63, 4,019.63 and 1,120.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680.63 : 4,019.63 = 1,120.17 : x
2. Step 2: Convert to fraction form
   2,680.63/4,019.63 = 1,120.17/x
3. Step 3: Cross multiply
   2,680.63x = 4,019.63 × 1,120.17
4. Step 4: Simplify right side
   2,680.63x = 4,502,668.94
5. Step 5: Solve for x
   x = 4,502,668.94/2,680.63
6. Step 6: Final answer
   x = 1,679.71