Finding the Fourth Proportional to 1,137.59, 1,705.82 and 443.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137.59 : 1,705.82 = 443.73 : x
2. Step 2: Convert to fraction form
   1,137.59/1,705.82 = 443.73/x
3. Step 3: Cross multiply
   1,137.59x = 1,705.82 × 443.73
4. Step 4: Simplify right side
   1,137.59x = 756,914.89
5. Step 5: Solve for x
   x = 756,914.89/1,137.59
6. Step 6: Final answer
   x = 665.37