Finding the Fourth Proportional to 3,196.89, 4,415.40 and 2,132.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.89 : 4,415.40 = 2,132.81 : x
2. Step 2: Convert to fraction form
   3,196.89/4,415.40 = 2,132.81/x
3. Step 3: Cross multiply
   3,196.89x = 4,415.40 × 2,132.81
4. Step 4: Simplify right side
   3,196.89x = 9,417,187.20
5. Step 5: Solve for x
   x = 9,417,187.20/3,196.89
6. Step 6: Final answer
   x = 2,945.73