Finding the Fourth Proportional to 820.79, 1,132.01 and 696.86

Step by Step Solution

1. Step 1: Write the proportion equation
   820.79 : 1,132.01 = 696.86 : x
2. Step 2: Convert to fraction form
   820.79/1,132.01 = 696.86/x
3. Step 3: Cross multiply
   820.79x = 1,132.01 × 696.86
4. Step 4: Simplify right side
   820.79x = 788,846.83
5. Step 5: Solve for x
   x = 788,846.83/820.79
6. Step 6: Final answer
   x = 961.09