Finding the Fourth Proportional to 2,219.43, 3,062.81 and 1,224.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.43 : 3,062.81 = 1,224.71 : x
2. Step 2: Convert to fraction form
   2,219.43/3,062.81 = 1,224.71/x
3. Step 3: Cross multiply
   2,219.43x = 3,062.81 × 1,224.71
4. Step 4: Simplify right side
   2,219.43x = 3,751,032.60
5. Step 5: Solve for x
   x = 3,751,032.60/2,219.43
6. Step 6: Final answer
   x = 1,690.09