Finding the Fourth Proportional to 2,713.71, 4,067.31 and 1,398.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,713.71 : 4,067.31 = 1,398.09 : x
2. Step 2: Convert to fraction form
   2,713.71/4,067.31 = 1,398.09/x
3. Step 3: Cross multiply
   2,713.71x = 4,067.31 × 1,398.09
4. Step 4: Simplify right side
   2,713.71x = 5,686,465.44
5. Step 5: Solve for x
   x = 5,686,465.44/2,713.71
6. Step 6: Final answer
   x = 2,095.46