Finding the Fourth Proportional to 2,144.54, 3,216.77 and 683.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.54 : 3,216.77 = 683.67 : x
2. Step 2: Convert to fraction form
   2,144.54/3,216.77 = 683.67/x
3. Step 3: Cross multiply
   2,144.54x = 3,216.77 × 683.67
4. Step 4: Simplify right side
   2,144.54x = 2,199,209.15
5. Step 5: Solve for x
   x = 2,199,209.15/2,144.54
6. Step 6: Final answer
   x = 1,025.49