Finding the Fourth Proportional to 2,081.50, 3,121.94 and 694.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.50 : 3,121.94 = 694.83 : x
2. Step 2: Convert to fraction form
   2,081.50/3,121.94 = 694.83/x
3. Step 3: Cross multiply
   2,081.50x = 3,121.94 × 694.83
4. Step 4: Simplify right side
   2,081.50x = 2,169,213.45
5. Step 5: Solve for x
   x = 2,169,213.45/2,081.50
6. Step 6: Final answer
   x = 1,042.14