Finding the Fourth Proportional to 2,691.72, 4,033.89 and 1,394.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,691.72 : 4,033.89 = 1,394.10 : x
2. Step 2: Convert to fraction form
   2,691.72/4,033.89 = 1,394.10/x
3. Step 3: Cross multiply
   2,691.72x = 4,033.89 × 1,394.10
4. Step 4: Simplify right side
   2,691.72x = 5,623,646.05
5. Step 5: Solve for x
   x = 5,623,646.05/2,691.72
6. Step 6: Final answer
   x = 2,089.24