Finding the Fourth Proportional to 1,144.69, 1,716.89 and 323.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.69 : 1,716.89 = 323.03 : x
2. Step 2: Convert to fraction form
   1,144.69/1,716.89 = 323.03/x
3. Step 3: Cross multiply
   1,144.69x = 1,716.89 × 323.03
4. Step 4: Simplify right side
   1,144.69x = 554,606.98
5. Step 5: Solve for x
   x = 554,606.98/1,144.69
6. Step 6: Final answer
   x = 484.50