Finding the Fourth Proportional to 1,408,149.33, 2,111,380.47 and 448,190.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408,149.33 : 2,111,380.47 = 448,190.28 : x
2. Step 2: Convert to fraction form
   1,408,149.33/2,111,380.47 = 448,190.28/x
3. Step 3: Cross multiply
   1,408,149.33x = 2,111,380.47 × 448,190.28
4. Step 4: Simplify right side
   1,408,149.33x = 946,300,204,035.83
5. Step 5: Solve for x
   x = 946,300,204,035.83/1,408,149.33
6. Step 6: Final answer
   x = 672,016.94