Finding the Fourth Proportional to 2,626.70, 3,940.15 and 1,222.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,626.70 : 3,940.15 = 1,222.43 : x
2. Step 2: Convert to fraction form
   2,626.70/3,940.15 = 1,222.43/x
3. Step 3: Cross multiply
   2,626.70x = 3,940.15 × 1,222.43
4. Step 4: Simplify right side
   2,626.70x = 4,816,557.56
5. Step 5: Solve for x
   x = 4,816,557.56/2,626.70
6. Step 6: Final answer
   x = 1,833.70