Finding the Fourth Proportional to 2,142.98, 3,214.50 and 683.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.98 : 3,214.50 = 683.36 : x
2. Step 2: Convert to fraction form
   2,142.98/3,214.50 = 683.36/x
3. Step 3: Cross multiply
   2,142.98x = 3,214.50 × 683.36
4. Step 4: Simplify right side
   2,142.98x = 2,196,660.72
5. Step 5: Solve for x
   x = 2,196,660.72/2,142.98
6. Step 6: Final answer
   x = 1,025.05