Finding the Fourth Proportional to 1,093.33, 1,639.98 and 443.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.33 : 1,639.98 = 443.62 : x
2. Step 2: Convert to fraction form
   1,093.33/1,639.98 = 443.62/x
3. Step 3: Cross multiply
   1,093.33x = 1,639.98 × 443.62
4. Step 4: Simplify right side
   1,093.33x = 727,527.93
5. Step 5: Solve for x
   x = 727,527.93/1,093.33
6. Step 6: Final answer
   x = 665.42