Finding the Fourth Proportional to 2,234.21, 3,082.57 and 1,289.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,234.21 : 3,082.57 = 1,289.93 : x
2. Step 2: Convert to fraction form
   2,234.21/3,082.57 = 1,289.93/x
3. Step 3: Cross multiply
   2,234.21x = 3,082.57 × 1,289.93
4. Step 4: Simplify right side
   2,234.21x = 3,976,299.52
5. Step 5: Solve for x
   x = 3,976,299.52/2,234.21
6. Step 6: Final answer
   x = 1,779.73