Finding the Fourth Proportional to 1,337.46, 2,001.33 and 989.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.46 : 2,001.33 = 989.94 : x
2. Step 2: Convert to fraction form
   1,337.46/2,001.33 = 989.94/x
3. Step 3: Cross multiply
   1,337.46x = 2,001.33 × 989.94
4. Step 4: Simplify right side
   1,337.46x = 1,981,196.62
5. Step 5: Solve for x
   x = 1,981,196.62/1,337.46
6. Step 6: Final answer
   x = 1,481.31