Finding the Fourth Proportional to 1,597.52, 2,395.98 and 443

Step by Step Solution

1. Step 1: Write the proportion equation
   1,597.52 : 2,395.98 = 443 : x
2. Step 2: Convert to fraction form
   1,597.52/2,395.98 = 443/x
3. Step 3: Cross multiply
   1,597.52x = 2,395.98 × 443
4. Step 4: Simplify right side
   1,597.52x = 1,061,419.14
5. Step 5: Solve for x
   x = 1,061,419.14/1,597.52
6. Step 6: Final answer
   x = 664.42