Finding the Fourth Proportional to 2,863.30, 4,286.55 and 2,136.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,863.30 : 4,286.55 = 2,136.10 : x
2. Step 2: Convert to fraction form
   2,863.30/4,286.55 = 2,136.10/x
3. Step 3: Cross multiply
   2,863.30x = 4,286.55 × 2,136.10
4. Step 4: Simplify right side
   2,863.30x = 9,156,499.46
5. Step 5: Solve for x
   x = 9,156,499.46/2,863.30
6. Step 6: Final answer
   x = 3,197.88