Finding the Fourth Proportional to 774.42, 1,068.71 and 459.69

Step by Step Solution

1. Step 1: Write the proportion equation
   774.42 : 1,068.71 = 459.69 : x
2. Step 2: Convert to fraction form
   774.42/1,068.71 = 459.69/x
3. Step 3: Cross multiply
   774.42x = 1,068.71 × 459.69
4. Step 4: Simplify right side
   774.42x = 491,275.30
5. Step 5: Solve for x
   x = 491,275.30/774.42
6. Step 6: Final answer
   x = 634.38