Finding the Fourth Proportional to 1,488.69, 2,233.50 and 448.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.69 : 2,233.50 = 448.72 : x
2. Step 2: Convert to fraction form
   1,488.69/2,233.50 = 448.72/x
3. Step 3: Cross multiply
   1,488.69x = 2,233.50 × 448.72
4. Step 4: Simplify right side
   1,488.69x = 1,002,208.85
5. Step 5: Solve for x
   x = 1,002,208.85/1,488.69
6. Step 6: Final answer
   x = 673.22