Finding the Fourth Proportional to 2,069.38, 3,103.30 and 682.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.38 : 3,103.30 = 682.31 : x
2. Step 2: Convert to fraction form
   2,069.38/3,103.30 = 682.31/x
3. Step 3: Cross multiply
   2,069.38x = 3,103.30 × 682.31
4. Step 4: Simplify right side
   2,069.38x = 2,117,409.21
5. Step 5: Solve for x
   x = 2,117,409.21/2,069.38
6. Step 6: Final answer
   x = 1,023.21