Finding the Fourth Proportional to 2,081.33, 3,120.94 and 694.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.33 : 3,120.94 = 694.17 : x
2. Step 2: Convert to fraction form
   2,081.33/3,120.94 = 694.17/x
3. Step 3: Cross multiply
   2,081.33x = 3,120.94 × 694.17
4. Step 4: Simplify right side
   2,081.33x = 2,166,463.79
5. Step 5: Solve for x
   x = 2,166,463.79/2,081.33
6. Step 6: Final answer
   x = 1,040.90