Finding the Fourth Proportional to 2,231,405.24, 3,079,357.98 and 1,212,809.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231,405.24 : 3,079,357.98 = 1,212,809.72 : x
2. Step 2: Convert to fraction form
   2,231,405.24/3,079,357.98 = 1,212,809.72/x
3. Step 3: Cross multiply
   2,231,405.24x = 3,079,357.98 × 1,212,809.72
4. Step 4: Simplify right side
   2,231,405.24x = 3,734,675,289,503.57
5. Step 5: Solve for x
   x = 3,734,675,289,503.57/2,231,405.24
6. Step 6: Final answer
   x = 1,673,687.60