Finding the Fourth Proportional to 1,983.36, 2,738.72 and 1,395.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,983.36 : 2,738.72 = 1,395.20 : x
2. Step 2: Convert to fraction form
   1,983.36/2,738.72 = 1,395.20/x
3. Step 3: Cross multiply
   1,983.36x = 2,738.72 × 1,395.20
4. Step 4: Simplify right side
   1,983.36x = 3,821,062.14
5. Step 5: Solve for x
   x = 3,821,062.14/1,983.36
6. Step 6: Final answer
   x = 1,926.56