Finding the Fourth Proportional to 2,250,297.12, 3,105,439.20 and 1,231,680

Step by Step Solution

1. Step 1: Write the proportion equation
   2,250,297.12 : 3,105,439.20 = 1,231,680 : x
2. Step 2: Convert to fraction form
   2,250,297.12/3,105,439.20 = 1,231,680/x
3. Step 3: Cross multiply
   2,250,297.12x = 3,105,439.20 × 1,231,680
4. Step 4: Simplify right side
   2,250,297.12x = 3,824,907,353,856
5. Step 5: Solve for x
   x = 3,824,907,353,856/2,250,297.12
6. Step 6: Final answer
   x = 1,699,734.37