Finding the Fourth Proportional to 1,481.05, 2,042.71 and 890.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,481.05 : 2,042.71 = 890.97 : x
2. Step 2: Convert to fraction form
   1,481.05/2,042.71 = 890.97/x
3. Step 3: Cross multiply
   1,481.05x = 2,042.71 × 890.97
4. Step 4: Simplify right side
   1,481.05x = 1,819,993.33
5. Step 5: Solve for x
   x = 1,819,993.33/1,481.05
6. Step 6: Final answer
   x = 1,228.85