Finding the Fourth Proportional to 1,196.40, 1,650.24 and 803.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.40 : 1,650.24 = 803.28 : x
2. Step 2: Convert to fraction form
   1,196.40/1,650.24 = 803.28/x
3. Step 3: Cross multiply
   1,196.40x = 1,650.24 × 803.28
4. Step 4: Simplify right side
   1,196.40x = 1,325,604.79
5. Step 5: Solve for x
   x = 1,325,604.79/1,196.40
6. Step 6: Final answer
   x = 1,107.99