Finding the Fourth Proportional to 2,788.49, 4,182.69 and 680.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788.49 : 4,182.69 = 680.14 : x
2. Step 2: Convert to fraction form
   2,788.49/4,182.69 = 680.14/x
3. Step 3: Cross multiply
   2,788.49x = 4,182.69 × 680.14
4. Step 4: Simplify right side
   2,788.49x = 2,844,814.78
5. Step 5: Solve for x
   x = 2,844,814.78/2,788.49
6. Step 6: Final answer
   x = 1,020.20