Finding the Fourth Proportional to 2,861.55, 3,946.90 and 2,626.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,861.55 : 3,946.90 = 2,626.26 : x
2. Step 2: Convert to fraction form
   2,861.55/3,946.90 = 2,626.26/x
3. Step 3: Cross multiply
   2,861.55x = 3,946.90 × 2,626.26
4. Step 4: Simplify right side
   2,861.55x = 10,365,579.03
5. Step 5: Solve for x
   x = 10,365,579.03/2,861.55
6. Step 6: Final answer
   x = 3,622.37