Finding the Fourth Proportional to 2,870.43, 3,962.15 and 2,206.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.43 : 3,962.15 = 2,206.36 : x
2. Step 2: Convert to fraction form
   2,870.43/3,962.15 = 2,206.36/x
3. Step 3: Cross multiply
   2,870.43x = 3,962.15 × 2,206.36
4. Step 4: Simplify right side
   2,870.43x = 8,741,929.27
5. Step 5: Solve for x
   x = 8,741,929.27/2,870.43
6. Step 6: Final answer
   x = 3,045.51