Finding the Fourth Proportional to 2,359.59, 3,256.20 and 1,311.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.59 : 3,256.20 = 1,311.57 : x
2. Step 2: Convert to fraction form
   2,359.59/3,256.20 = 1,311.57/x
3. Step 3: Cross multiply
   2,359.59x = 3,256.20 × 1,311.57
4. Step 4: Simplify right side
   2,359.59x = 4,270,734.23
5. Step 5: Solve for x
   x = 4,270,734.23/2,359.59
6. Step 6: Final answer
   x = 1,809.95