Finding the Fourth Proportional to 2,105,930.76, 3,159,289.79 and 843,856.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,930.76 : 3,159,289.79 = 843,856.80 : x
2. Step 2: Convert to fraction form
   2,105,930.76/3,159,289.79 = 843,856.80/x
3. Step 3: Cross multiply
   2,105,930.76x = 3,159,289.79 × 843,856.80
4. Step 4: Simplify right side
   2,105,930.76x = 2,665,988,172,462.07
5. Step 5: Solve for x
   x = 2,665,988,172,462.07/2,105,930.76
6. Step 6: Final answer
   x = 1,265,942.94