Finding the Fourth Proportional to 3,196.26, 4,406.40 and 2,485.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.26 : 4,406.40 = 2,485.89 : x
2. Step 2: Convert to fraction form
   3,196.26/4,406.40 = 2,485.89/x
3. Step 3: Cross multiply
   3,196.26x = 4,406.40 × 2,485.89
4. Step 4: Simplify right side
   3,196.26x = 10,953,825.70
5. Step 5: Solve for x
   x = 10,953,825.70/3,196.26
6. Step 6: Final answer
   x = 3,427.08