Finding the Fourth Proportional to 2,105,575.92, 3,157,656.66 and 685,297.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,575.92 : 3,157,656.66 = 685,297.98 : x
2. Step 2: Convert to fraction form
   2,105,575.92/3,157,656.66 = 685,297.98/x
3. Step 3: Cross multiply
   2,105,575.92x = 3,157,656.66 × 685,297.98
4. Step 4: Simplify right side
   2,105,575.92x = 2,163,935,730,631.55
5. Step 5: Solve for x
   x = 2,163,935,730,631.55/2,105,575.92
6. Step 6: Final answer
   x = 1,027,716.79