Finding the Fourth Proportional to 2,131.56, 3,198.15 and 1,092.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.56 : 3,198.15 = 1,092.06 : x
2. Step 2: Convert to fraction form
   2,131.56/3,198.15 = 1,092.06/x
3. Step 3: Cross multiply
   2,131.56x = 3,198.15 × 1,092.06
4. Step 4: Simplify right side
   2,131.56x = 3,492,571.69
5. Step 5: Solve for x
   x = 3,492,571.69/2,131.56
6. Step 6: Final answer
   x = 1,638.50