Finding the Fourth Proportional to 1,064.72, 1,597.34 and 448.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.72 : 1,597.34 = 448.09 : x
2. Step 2: Convert to fraction form
   1,064.72/1,597.34 = 448.09/x
3. Step 3: Cross multiply
   1,064.72x = 1,597.34 × 448.09
4. Step 4: Simplify right side
   1,064.72x = 715,752.08
5. Step 5: Solve for x
   x = 715,752.08/1,064.72
6. Step 6: Final answer
   x = 672.24