Finding the Fourth Proportional to 2,359.34, 3,255.84 and 1,311.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.34 : 3,255.84 = 1,311.38 : x
2. Step 2: Convert to fraction form
   2,359.34/3,255.84 = 1,311.38/x
3. Step 3: Cross multiply
   2,359.34x = 3,255.84 × 1,311.38
4. Step 4: Simplify right side
   2,359.34x = 4,269,627.18
5. Step 5: Solve for x
   x = 4,269,627.18/2,359.34
6. Step 6: Final answer
   x = 1,809.67