Finding the Fourth Proportional to 2,234.98, 3,083.96 and 1,290.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,234.98 : 3,083.96 = 1,290.88 : x
2. Step 2: Convert to fraction form
   2,234.98/3,083.96 = 1,290.88/x
3. Step 3: Cross multiply
   2,234.98x = 3,083.96 × 1,290.88
4. Step 4: Simplify right side
   2,234.98x = 3,981,022.28
5. Step 5: Solve for x
   x = 3,981,022.28/2,234.98
6. Step 6: Final answer
   x = 1,781.23