Finding the Fourth Proportional to 1,443.59, 1,990.03 and 1,243.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.59 : 1,990.03 = 1,243.54 : x
2. Step 2: Convert to fraction form
   1,443.59/1,990.03 = 1,243.54/x
3. Step 3: Cross multiply
   1,443.59x = 1,990.03 × 1,243.54
4. Step 4: Simplify right side
   1,443.59x = 2,474,684.93
5. Step 5: Solve for x
   x = 2,474,684.93/1,443.59
6. Step 6: Final answer
   x = 1,714.26