Finding the Fourth Proportional to 2,144.18, 3,216.50 and 682.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.18 : 3,216.50 = 682.99 : x
2. Step 2: Convert to fraction form
   2,144.18/3,216.50 = 682.99/x
3. Step 3: Cross multiply
   2,144.18x = 3,216.50 × 682.99
4. Step 4: Simplify right side
   2,144.18x = 2,196,825.88
5. Step 5: Solve for x
   x = 2,196,825.88/2,144.18
6. Step 6: Final answer
   x = 1,024.56