Finding the Fourth Proportional to 2,359.32, 3,255.58 and 1,311.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.32 : 3,255.58 = 1,311.24 : x
2. Step 2: Convert to fraction form
   2,359.32/3,255.58 = 1,311.24/x
3. Step 3: Cross multiply
   2,359.32x = 3,255.58 × 1,311.24
4. Step 4: Simplify right side
   2,359.32x = 4,268,846.72
5. Step 5: Solve for x
   x = 4,268,846.72/2,359.32
6. Step 6: Final answer
   x = 1,809.35