Finding the Fourth Proportional to 774.56, 1,067.82 and 617.72

Step by Step Solution

1. Step 1: Write the proportion equation
   774.56 : 1,067.82 = 617.72 : x
2. Step 2: Convert to fraction form
   774.56/1,067.82 = 617.72/x
3. Step 3: Cross multiply
   774.56x = 1,067.82 × 617.72
4. Step 4: Simplify right side
   774.56x = 659,613.77
5. Step 5: Solve for x
   x = 659,613.77/774.56
6. Step 6: Final answer
   x = 851.60