Finding the Fourth Proportional to 1,443.30, 1,992.81 and 884.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.30 : 1,992.81 = 884.54 : x
2. Step 2: Convert to fraction form
   1,443.30/1,992.81 = 884.54/x
3. Step 3: Cross multiply
   1,443.30x = 1,992.81 × 884.54
4. Step 4: Simplify right side
   1,443.30x = 1,762,710.19
5. Step 5: Solve for x
   x = 1,762,710.19/1,443.30
6. Step 6: Final answer
   x = 1,221.31