Finding the Fourth Proportional to 1,144.54, 1,716.82 and 404.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.54 : 1,716.82 = 404.17 : x
2. Step 2: Convert to fraction form
   1,144.54/1,716.82 = 404.17/x
3. Step 3: Cross multiply
   1,144.54x = 1,716.82 × 404.17
4. Step 4: Simplify right side
   1,144.54x = 693,887.14
5. Step 5: Solve for x
   x = 693,887.14/1,144.54
6. Step 6: Final answer
   x = 606.26