Finding the Fourth Proportional to 1,329.12, 1,834.56 and 863.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,329.12 : 1,834.56 = 863.52 : x
2. Step 2: Convert to fraction form
   1,329.12/1,834.56 = 863.52/x
3. Step 3: Cross multiply
   1,329.12x = 1,834.56 × 863.52
4. Step 4: Simplify right side
   1,329.12x = 1,584,179.25
5. Step 5: Solve for x
   x = 1,584,179.25/1,329.12
6. Step 6: Final answer
   x = 1,191.90