Finding the Fourth Proportional to 2,221.14, 3,329.88 and 922.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.14 : 3,329.88 = 922.30 : x
2. Step 2: Convert to fraction form
   2,221.14/3,329.88 = 922.30/x
3. Step 3: Cross multiply
   2,221.14x = 3,329.88 × 922.30
4. Step 4: Simplify right side
   2,221.14x = 3,071,148.32
5. Step 5: Solve for x
   x = 3,071,148.32/2,221.14
6. Step 6: Final answer
   x = 1,382.69