Finding the Fourth Proportional to 2,222.43, 3,313.48 and 2,164.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.43 : 3,313.48 = 2,164.71 : x
2. Step 2: Convert to fraction form
   2,222.43/3,313.48 = 2,164.71/x
3. Step 3: Cross multiply
   2,222.43x = 3,313.48 × 2,164.71
4. Step 4: Simplify right side
   2,222.43x = 7,172,723.29
5. Step 5: Solve for x
   x = 7,172,723.29/2,222.43
6. Step 6: Final answer
   x = 3,227.42