Finding the Fourth Proportional to 2,359.08, 3,255.30 and 1,311

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.08 : 3,255.30 = 1,311 : x
2. Step 2: Convert to fraction form
   2,359.08/3,255.30 = 1,311/x
3. Step 3: Cross multiply
   2,359.08x = 3,255.30 × 1,311
4. Step 4: Simplify right side
   2,359.08x = 4,267,698.30
5. Step 5: Solve for x
   x = 4,267,698.30/2,359.08
6. Step 6: Final answer
   x = 1,809.05