Finding the Fourth Proportional to 2,627.72, 3,940.43 and 1,394.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,627.72 : 3,940.43 = 1,394.85 : x
2. Step 2: Convert to fraction form
   2,627.72/3,940.43 = 1,394.85/x
3. Step 3: Cross multiply
   2,627.72x = 3,940.43 × 1,394.85
4. Step 4: Simplify right side
   2,627.72x = 5,496,301.81
5. Step 5: Solve for x
   x = 5,496,301.81/2,627.72
6. Step 6: Final answer
   x = 2,091.67