Finding the Fourth Proportional to 1,136.71, 1,705.52 and 443.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,136.71 : 1,705.52 = 443.59 : x
2. Step 2: Convert to fraction form
   1,136.71/1,705.52 = 443.59/x
3. Step 3: Cross multiply
   1,136.71x = 1,705.52 × 443.59
4. Step 4: Simplify right side
   1,136.71x = 756,551.62
5. Step 5: Solve for x
   x = 756,551.62/1,136.71
6. Step 6: Final answer
   x = 665.56