Finding the Fourth Proportional to 2,870.43, 3,962.51 and 2,207.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.43 : 3,962.51 = 2,207.05 : x
2. Step 2: Convert to fraction form
   2,870.43/3,962.51 = 2,207.05/x
3. Step 3: Cross multiply
   2,870.43x = 3,962.51 × 2,207.05
4. Step 4: Simplify right side
   2,870.43x = 8,745,446.66
5. Step 5: Solve for x
   x = 8,745,446.66/2,870.43
6. Step 6: Final answer
   x = 3,046.74