Finding the Fourth Proportional to 2,234.62, 3,083.60 and 1,289.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,234.62 : 3,083.60 = 1,289.76 : x
2. Step 2: Convert to fraction form
   2,234.62/3,083.60 = 1,289.76/x
3. Step 3: Cross multiply
   2,234.62x = 3,083.60 × 1,289.76
4. Step 4: Simplify right side
   2,234.62x = 3,977,095.60
5. Step 5: Solve for x
   x = 3,977,095.60/2,234.62
6. Step 6: Final answer
   x = 1,779.76