Finding the Fourth Proportional to 1,144.32, 1,716.89 and 450.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.32 : 1,716.89 = 450.60 : x
2. Step 2: Convert to fraction form
   1,144.32/1,716.89 = 450.60/x
3. Step 3: Cross multiply
   1,144.32x = 1,716.89 × 450.60
4. Step 4: Simplify right side
   1,144.32x = 773,631.76
5. Step 5: Solve for x
   x = 773,631.76/1,144.32
6. Step 6: Final answer
   x = 676.06