Finding the Fourth Proportional to 2,098.09, 3,142.82 and 1,230.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,098.09 : 3,142.82 = 1,230.31 : x
2. Step 2: Convert to fraction form
   2,098.09/3,142.82 = 1,230.31/x
3. Step 3: Cross multiply
   2,098.09x = 3,142.82 × 1,230.31
4. Step 4: Simplify right side
   2,098.09x = 3,866,647.66
5. Step 5: Solve for x
   x = 3,866,647.66/2,098.09
6. Step 6: Final answer
   x = 1,842.93