Finding the Fourth Proportional to 1,271,067.84, 1,906,667.34 and 324,446.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271,067.84 : 1,906,667.34 = 324,446.76 : x
2. Step 2: Convert to fraction form
   1,271,067.84/1,906,667.34 = 324,446.76/x
3. Step 3: Cross multiply
   1,271,067.84x = 1,906,667.34 × 324,446.76
4. Step 4: Simplify right side
   1,271,067.84x = 618,612,040,860.82
5. Step 5: Solve for x
   x = 618,612,040,860.82/1,271,067.84
6. Step 6: Final answer
   x = 486,686.88