Finding the Fourth Proportional to 2,978,222.97, 4,469,223.95 and 1,272,379.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978,222.97 : 4,469,223.95 = 1,272,379.11 : x
2. Step 2: Convert to fraction form
   2,978,222.97/4,469,223.95 = 1,272,379.11/x
3. Step 3: Cross multiply
   2,978,222.97x = 4,469,223.95 × 1,272,379.11
4. Step 4: Simplify right side
   2,978,222.97x = 5,686,547,191,891.69
5. Step 5: Solve for x
   x = 5,686,547,191,891.69/2,978,222.97
6. Step 6: Final answer
   x = 1,909,375.91