Finding the Fourth Proportional to 1,443.60, 1,992.02 and 884.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.60 : 1,992.02 = 884.23 : x
2. Step 2: Convert to fraction form
   1,443.60/1,992.02 = 884.23/x
3. Step 3: Cross multiply
   1,443.60x = 1,992.02 × 884.23
4. Step 4: Simplify right side
   1,443.60x = 1,761,403.84
5. Step 5: Solve for x
   x = 1,761,403.84/1,443.60
6. Step 6: Final answer
   x = 1,220.15