Finding the Fourth Proportional to 2,626.89, 3,936.61 and 1,394.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,626.89 : 3,936.61 = 1,394.88 : x
2. Step 2: Convert to fraction form
   2,626.89/3,936.61 = 1,394.88/x
3. Step 3: Cross multiply
   2,626.89x = 3,936.61 × 1,394.88
4. Step 4: Simplify right side
   2,626.89x = 5,491,098.56
5. Step 5: Solve for x
   x = 5,491,098.56/2,626.89
6. Step 6: Final answer
   x = 2,090.34