Finding the Fourth Proportional to 1,013.73, 1,404.83 and 994.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013.73 : 1,404.83 = 994.29 : x
2. Step 2: Convert to fraction form
   1,013.73/1,404.83 = 994.29/x
3. Step 3: Cross multiply
   1,013.73x = 1,404.83 × 994.29
4. Step 4: Simplify right side
   1,013.73x = 1,396,803.45
5. Step 5: Solve for x
   x = 1,396,803.45/1,013.73
6. Step 6: Final answer
   x = 1,377.89