Finding the Fourth Proportional to 2,234.56, 3,083.88 and 1,290.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,234.56 : 3,083.88 = 1,290.52 : x
2. Step 2: Convert to fraction form
   2,234.56/3,083.88 = 1,290.52/x
3. Step 3: Cross multiply
   2,234.56x = 3,083.88 × 1,290.52
4. Step 4: Simplify right side
   2,234.56x = 3,979,808.82
5. Step 5: Solve for x
   x = 3,979,808.82/2,234.56
6. Step 6: Final answer
   x = 1,781.03