Finding the Fourth Proportional to 404.69, 607.33 and 144.69

Step by Step Solution

1. Step 1: Write the proportion equation
   404.69 : 607.33 = 144.69 : x
2. Step 2: Convert to fraction form
   404.69/607.33 = 144.69/x
3. Step 3: Cross multiply
   404.69x = 607.33 × 144.69
4. Step 4: Simplify right side
   404.69x = 87,874.22
5. Step 5: Solve for x
   x = 87,874.22/404.69
6. Step 6: Final answer
   x = 217.14