Finding the Fourth Proportional to 2,105,738.22, 3,158,828.79 and 685,905.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,738.22 : 3,158,828.79 = 685,905.03 : x
2. Step 2: Convert to fraction form
   2,105,738.22/3,158,828.79 = 685,905.03/x
3. Step 3: Cross multiply
   2,105,738.22x = 3,158,828.79 × 685,905.03
4. Step 4: Simplify right side
   2,105,738.22x = 2,166,656,555,969.81
5. Step 5: Solve for x
   x = 2,166,656,555,969.81/2,105,738.22
6. Step 6: Final answer
   x = 1,028,929.68