Finding the Fourth Proportional to 1,444.39, 1,992.18 and 996.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.39 : 1,992.18 = 996.40 : x
2. Step 2: Convert to fraction form
   1,444.39/1,992.18 = 996.40/x
3. Step 3: Cross multiply
   1,444.39x = 1,992.18 × 996.40
4. Step 4: Simplify right side
   1,444.39x = 1,985,008.15
5. Step 5: Solve for x
   x = 1,985,008.15/1,444.39
6. Step 6: Final answer
   x = 1,374.29