Finding the Fourth Proportional to 2,234.19, 3,083.32 and 1,290.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,234.19 : 3,083.32 = 1,290.15 : x
2. Step 2: Convert to fraction form
   2,234.19/3,083.32 = 1,290.15/x
3. Step 3: Cross multiply
   2,234.19x = 3,083.32 × 1,290.15
4. Step 4: Simplify right side
   2,234.19x = 3,977,942.07
5. Step 5: Solve for x
   x = 3,977,942.07/2,234.19
6. Step 6: Final answer
   x = 1,780.49