Finding the Fourth Proportional to 1,597.39, 2,396.13 and 443.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,597.39 : 2,396.13 = 443.15 : x
2. Step 2: Convert to fraction form
   1,597.39/2,396.13 = 443.15/x
3. Step 3: Cross multiply
   1,597.39x = 2,396.13 × 443.15
4. Step 4: Simplify right side
   1,597.39x = 1,061,845.01
5. Step 5: Solve for x
   x = 1,061,845.01/1,597.39
6. Step 6: Final answer
   x = 664.74