Finding the Fourth Proportional to 2,131.80, 3,196.80 and 1,036.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.80 : 3,196.80 = 1,036.50 : x
2. Step 2: Convert to fraction form
   2,131.80/3,196.80 = 1,036.50/x
3. Step 3: Cross multiply
   2,131.80x = 3,196.80 × 1,036.50
4. Step 4: Simplify right side
   2,131.80x = 3,313,483.20
5. Step 5: Solve for x
   x = 3,313,483.20/2,131.80
6. Step 6: Final answer
   x = 1,554.31