Finding the Fourth Proportional to 2,359.77, 3,256.47 and 1,311.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.77 : 3,256.47 = 1,311.83 : x
2. Step 2: Convert to fraction form
   2,359.77/3,256.47 = 1,311.83/x
3. Step 3: Cross multiply
   2,359.77x = 3,256.47 × 1,311.83
4. Step 4: Simplify right side
   2,359.77x = 4,271,930.97
5. Step 5: Solve for x
   x = 4,271,930.97/2,359.77
6. Step 6: Final answer
   x = 1,810.32