Finding the Fourth Proportional to 1,443.96, 1,992.90 and 1,073.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.96 : 1,992.90 = 1,073.40 : x
2. Step 2: Convert to fraction form
   1,443.96/1,992.90 = 1,073.40/x
3. Step 3: Cross multiply
   1,443.96x = 1,992.90 × 1,073.40
4. Step 4: Simplify right side
   1,443.96x = 2,139,178.86
5. Step 5: Solve for x
   x = 2,139,178.86/1,443.96
6. Step 6: Final answer
   x = 1,481.47