Finding the Fourth Proportional to 1,196.10, 1,650.57 and 698.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.10 : 1,650.57 = 698.88 : x
2. Step 2: Convert to fraction form
   1,196.10/1,650.57 = 698.88/x
3. Step 3: Cross multiply
   1,196.10x = 1,650.57 × 698.88
4. Step 4: Simplify right side
   1,196.10x = 1,153,550.36
5. Step 5: Solve for x
   x = 1,153,550.36/1,196.10
6. Step 6: Final answer
   x = 964.43