Finding the Fourth Proportional to 2,105,739.72, 3,158,831.04 and 685,906.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,739.72 : 3,158,831.04 = 685,906.53 : x
2. Step 2: Convert to fraction form
   2,105,739.72/3,158,831.04 = 685,906.53/x
3. Step 3: Cross multiply
   2,105,739.72x = 3,158,831.04 × 685,906.53
4. Step 4: Simplify right side
   2,105,739.72x = 2,166,662,837,502.69
5. Step 5: Solve for x
   x = 2,166,662,837,502.69/2,105,739.72
6. Step 6: Final answer
   x = 1,028,931.93