Finding the Fourth Proportional to 2,131.36, 3,198.48 and 1,036.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.36 : 3,198.48 = 1,036.48 : x
2. Step 2: Convert to fraction form
   2,131.36/3,198.48 = 1,036.48/x
3. Step 3: Cross multiply
   2,131.36x = 3,198.48 × 1,036.48
4. Step 4: Simplify right side
   2,131.36x = 3,315,160.55
5. Step 5: Solve for x
   x = 3,315,160.55/2,131.36
6. Step 6: Final answer
   x = 1,555.42