Finding the Fourth Proportional to 796.62, 1,196.55 and 661.62

Step by Step Solution

1. Step 1: Write the proportion equation
   796.62 : 1,196.55 = 661.62 : x
2. Step 2: Convert to fraction form
   796.62/1,196.55 = 661.62/x
3. Step 3: Cross multiply
   796.62x = 1,196.55 × 661.62
4. Step 4: Simplify right side
   796.62x = 791,661.41
5. Step 5: Solve for x
   x = 791,661.41/796.62
6. Step 6: Final answer
   x = 993.78