Finding the Fourth Proportional to 1,443.46, 1,992.20 and 1,069.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.46 : 1,992.20 = 1,069.92 : x
2. Step 2: Convert to fraction form
   1,443.46/1,992.20 = 1,069.92/x
3. Step 3: Cross multiply
   1,443.46x = 1,992.20 × 1,069.92
4. Step 4: Simplify right side
   1,443.46x = 2,131,494.62
5. Step 5: Solve for x
   x = 2,131,494.62/1,443.46
6. Step 6: Final answer
   x = 1,476.66