Finding the Fourth Proportional to 1,059.83, 1,589.46 and 443.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.83 : 1,589.46 = 443.41 : x
2. Step 2: Convert to fraction form
   1,059.83/1,589.46 = 443.41/x
3. Step 3: Cross multiply
   1,059.83x = 1,589.46 × 443.41
4. Step 4: Simplify right side
   1,059.83x = 704,776.82
5. Step 5: Solve for x
   x = 704,776.82/1,059.83
6. Step 6: Final answer
   x = 664.99