Finding the Fourth Proportional to 1,064.57, 1,597.15 and 447.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.57 : 1,597.15 = 447.95 : x
2. Step 2: Convert to fraction form
   1,064.57/1,597.15 = 447.95/x
3. Step 3: Cross multiply
   1,064.57x = 1,597.15 × 447.95
4. Step 4: Simplify right side
   1,064.57x = 715,443.34
5. Step 5: Solve for x
   x = 715,443.34/1,064.57
6. Step 6: Final answer
   x = 672.05