Finding the Fourth Proportional to 816.76, 1,131.55 and 796.72

Step by Step Solution

1. Step 1: Write the proportion equation
   816.76 : 1,131.55 = 796.72 : x
2. Step 2: Convert to fraction form
   816.76/1,131.55 = 796.72/x
3. Step 3: Cross multiply
   816.76x = 1,131.55 × 796.72
4. Step 4: Simplify right side
   816.76x = 901,528.52
5. Step 5: Solve for x
   x = 901,528.52/816.76
6. Step 6: Final answer
   x = 1,103.79