Finding the Fourth Proportional to 2,222.88, 3,332.18 and 990.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.88 : 3,332.18 = 990.46 : x
2. Step 2: Convert to fraction form
   2,222.88/3,332.18 = 990.46/x
3. Step 3: Cross multiply
   2,222.88x = 3,332.18 × 990.46
4. Step 4: Simplify right side
   2,222.88x = 3,300,391.00
5. Step 5: Solve for x
   x = 3,300,391.00/2,222.88
6. Step 6: Final answer
   x = 1,484.74