Finding the Fourth Proportional to 1,441.89, 1,989.08 and 881.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.89 : 1,989.08 = 881.38 : x
2. Step 2: Convert to fraction form
   1,441.89/1,989.08 = 881.38/x
3. Step 3: Cross multiply
   1,441.89x = 1,989.08 × 881.38
4. Step 4: Simplify right side
   1,441.89x = 1,753,135.33
5. Step 5: Solve for x
   x = 1,753,135.33/1,441.89
6. Step 6: Final answer
   x = 1,215.86