Finding the Fourth Proportional to 1,059.59, 1,588.23 and 443.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.59 : 1,588.23 = 443.63 : x
2. Step 2: Convert to fraction form
   1,059.59/1,588.23 = 443.63/x
3. Step 3: Cross multiply
   1,059.59x = 1,588.23 × 443.63
4. Step 4: Simplify right side
   1,059.59x = 704,578.53
5. Step 5: Solve for x
   x = 704,578.53/1,059.59
6. Step 6: Final answer
   x = 664.96