Finding the Fourth Proportional to 2,144.73, 3,217.69 and 683.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.73 : 3,217.69 = 683.99 : x
2. Step 2: Convert to fraction form
   2,144.73/3,217.69 = 683.99/x
3. Step 3: Cross multiply
   2,144.73x = 3,217.69 × 683.99
4. Step 4: Simplify right side
   2,144.73x = 2,200,867.78
5. Step 5: Solve for x
   x = 2,200,867.78/2,144.73
6. Step 6: Final answer
   x = 1,026.17