Finding the Fourth Proportional to 1,483.31, 2,224.87 and 443.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.31 : 2,224.87 = 443.31 : x
2. Step 2: Convert to fraction form
   1,483.31/2,224.87 = 443.31/x
3. Step 3: Cross multiply
   1,483.31x = 2,224.87 × 443.31
4. Step 4: Simplify right side
   1,483.31x = 986,306.01
5. Step 5: Solve for x
   x = 986,306.01/1,483.31
6. Step 6: Final answer
   x = 664.94