Finding the Fourth Proportional to 796.56, 1,099.64 and 572.72

Step by Step Solution

1. Step 1: Write the proportion equation
   796.56 : 1,099.64 = 572.72 : x
2. Step 2: Convert to fraction form
   796.56/1,099.64 = 572.72/x
3. Step 3: Cross multiply
   796.56x = 1,099.64 × 572.72
4. Step 4: Simplify right side
   796.56x = 629,785.82
5. Step 5: Solve for x
   x = 629,785.82/796.56
6. Step 6: Final answer
   x = 790.63