Finding the Fourth Proportional to 2,215,322.69, 3,057,069.73 and 1,221,929.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215,322.69 : 3,057,069.73 = 1,221,929.86 : x
2. Step 2: Convert to fraction form
   2,215,322.69/3,057,069.73 = 1,221,929.86/x
3. Step 3: Cross multiply
   2,215,322.69x = 3,057,069.73 × 1,221,929.86
4. Step 4: Simplify right side
   2,215,322.69x = 3,735,524,787,189.14
5. Step 5: Solve for x
   x = 3,735,524,787,189.14/2,215,322.69
6. Step 6: Final answer
   x = 1,686,221.52