Finding the Fourth Proportional to 2,069.60, 3,103.80 and 683.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.60 : 3,103.80 = 683.12 : x
2. Step 2: Convert to fraction form
   2,069.60/3,103.80 = 683.12/x
3. Step 3: Cross multiply
   2,069.60x = 3,103.80 × 683.12
4. Step 4: Simplify right side
   2,069.60x = 2,120,267.86
5. Step 5: Solve for x
   x = 2,120,267.86/2,069.60
6. Step 6: Final answer
   x = 1,024.48