Finding the Fourth Proportional to 2,224.06, 3,336.69 and 991.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,224.06 : 3,336.69 = 991.54 : x
2. Step 2: Convert to fraction form
   2,224.06/3,336.69 = 991.54/x
3. Step 3: Cross multiply
   2,224.06x = 3,336.69 × 991.54
4. Step 4: Simplify right side
   2,224.06x = 3,308,469.49
5. Step 5: Solve for x
   x = 3,308,469.49/2,224.06
6. Step 6: Final answer
   x = 1,487.58