Finding the Fourth Proportional to 3,196.86, 4,405.75 and 2,311.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.86 : 4,405.75 = 2,311.12 : x
2. Step 2: Convert to fraction form
   3,196.86/4,405.75 = 2,311.12/x
3. Step 3: Cross multiply
   3,196.86x = 4,405.75 × 2,311.12
4. Step 4: Simplify right side
   3,196.86x = 10,182,216.94
5. Step 5: Solve for x
   x = 10,182,216.94/3,196.86
6. Step 6: Final answer
   x = 3,185.07