Finding the Fourth Proportional to 2,359.23, 3,255.89 and 1,311.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.23 : 3,255.89 = 1,311.29 : x
2. Step 2: Convert to fraction form
   2,359.23/3,255.89 = 1,311.29/x
3. Step 3: Cross multiply
   2,359.23x = 3,255.89 × 1,311.29
4. Step 4: Simplify right side
   2,359.23x = 4,269,416.00
5. Step 5: Solve for x
   x = 4,269,416.00/2,359.23
6. Step 6: Final answer
   x = 1,809.67