Finding the Fourth Proportional to 3,196.40, 4,785.58 and 2,154.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.40 : 4,785.58 = 2,154.34 : x
2. Step 2: Convert to fraction form
   3,196.40/4,785.58 = 2,154.34/x
3. Step 3: Cross multiply
   3,196.40x = 4,785.58 × 2,154.34
4. Step 4: Simplify right side
   3,196.40x = 10,309,766.42
5. Step 5: Solve for x
   x = 10,309,766.42/3,196.40
6. Step 6: Final answer
   x = 3,225.43