Finding the Fourth Proportional to 1,444.23, 1,990.10 and 996.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.23 : 1,990.10 = 996.24 : x
2. Step 2: Convert to fraction form
   1,444.23/1,990.10 = 996.24/x
3. Step 3: Cross multiply
   1,444.23x = 1,990.10 × 996.24
4. Step 4: Simplify right side
   1,444.23x = 1,982,612.24
5. Step 5: Solve for x
   x = 1,982,612.24/1,444.23
6. Step 6: Final answer
   x = 1,372.78