Finding the Fourth Proportional to 1,064.16, 1,596.69 and 448.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.16 : 1,596.69 = 448.00 : x
2. Step 2: Convert to fraction form
   1,064.16/1,596.69 = 448.00/x
3. Step 3: Cross multiply
   1,064.16x = 1,596.69 × 448.00
4. Step 4: Simplify right side
   1,064.16x = 715,306.90
5. Step 5: Solve for x
   x = 715,306.90/1,064.16
6. Step 6: Final answer
   x = 672.18