Finding the Fourth Proportional to 2,870.88, 3,954.27 and 2,206.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.88 : 3,954.27 = 2,206.46 : x
2. Step 2: Convert to fraction form
   2,870.88/3,954.27 = 2,206.46/x
3. Step 3: Cross multiply
   2,870.88x = 3,954.27 × 2,206.46
4. Step 4: Simplify right side
   2,870.88x = 8,724,938.58
5. Step 5: Solve for x
   x = 8,724,938.58/2,870.88
6. Step 6: Final answer
   x = 3,039.12