Finding the Fourth Proportional to 2,105,453.97, 3,157,851.49 and 685,500.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,453.97 : 3,157,851.49 = 685,500.48 : x
2. Step 2: Convert to fraction form
   2,105,453.97/3,157,851.49 = 685,500.48/x
3. Step 3: Cross multiply
   2,105,453.97x = 3,157,851.49 × 685,500.48
4. Step 4: Simplify right side
   2,105,453.97x = 2,164,708,712,163.72
5. Step 5: Solve for x
   x = 2,164,708,712,163.72/2,105,453.97
6. Step 6: Final answer
   x = 1,028,143.45