Finding the Fourth Proportional to 2,371.28, 3,559.55 and 1,398.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,371.28 : 3,559.55 = 1,398.06 : x
2. Step 2: Convert to fraction form
   2,371.28/3,559.55 = 1,398.06/x
3. Step 3: Cross multiply
   2,371.28x = 3,559.55 × 1,398.06
4. Step 4: Simplify right side
   2,371.28x = 4,976,457.48
5. Step 5: Solve for x
   x = 4,976,457.48/2,371.28
6. Step 6: Final answer
   x = 2,098.64