Finding the Fourth Proportional to 1,443.80, 1,992.16 and 1,001.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.80 : 1,992.16 = 1,001.56 : x
2. Step 2: Convert to fraction form
   1,443.80/1,992.16 = 1,001.56/x
3. Step 3: Cross multiply
   1,443.80x = 1,992.16 × 1,001.56
4. Step 4: Simplify right side
   1,443.80x = 1,995,267.77
5. Step 5: Solve for x
   x = 1,995,267.77/1,443.80
6. Step 6: Final answer
   x = 1,381.96