Finding the Fourth Proportional to 1,443.56, 1,990.44 and 1,233.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.56 : 1,990.44 = 1,233.09 : x
2. Step 2: Convert to fraction form
   1,443.56/1,990.44 = 1,233.09/x
3. Step 3: Cross multiply
   1,443.56x = 1,990.44 × 1,233.09
4. Step 4: Simplify right side
   1,443.56x = 2,454,391.66
5. Step 5: Solve for x
   x = 2,454,391.66/1,443.56
6. Step 6: Final answer
   x = 1,700.24