Finding the Fourth Proportional to 2,215.29, 3,056.90 and 1,626.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.29 : 3,056.90 = 1,626.15 : x
2. Step 2: Convert to fraction form
   2,215.29/3,056.90 = 1,626.15/x
3. Step 3: Cross multiply
   2,215.29x = 3,056.90 × 1,626.15
4. Step 4: Simplify right side
   2,215.29x = 4,970,969.80
5. Step 5: Solve for x
   x = 4,970,969.80/2,215.29
6. Step 6: Final answer
   x = 2,243.94