Finding the Fourth Proportional to 822.72, 1,134.69 and 698.79

Step by Step Solution

1. Step 1: Write the proportion equation
   822.72 : 1,134.69 = 698.79 : x
2. Step 2: Convert to fraction form
   822.72/1,134.69 = 698.79/x
3. Step 3: Cross multiply
   822.72x = 1,134.69 × 698.79
4. Step 4: Simplify right side
   822.72x = 792,910.03
5. Step 5: Solve for x
   x = 792,910.03/822.72
6. Step 6: Final answer
   x = 963.77