Finding the Fourth Proportional to 2,131.31, 3,198.88 and 1,092.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.31 : 3,198.88 = 1,092.03 : x
2. Step 2: Convert to fraction form
   2,131.31/3,198.88 = 1,092.03/x
3. Step 3: Cross multiply
   2,131.31x = 3,198.88 × 1,092.03
4. Step 4: Simplify right side
   2,131.31x = 3,493,251.47
5. Step 5: Solve for x
   x = 3,493,251.47/2,131.31
6. Step 6: Final answer
   x = 1,639.02