Finding the Fourth Proportional to 2,140,053.68, 3,209,147.37 and 809,424.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,053.68 : 3,209,147.37 = 809,424.56 : x
2. Step 2: Convert to fraction form
   2,140,053.68/3,209,147.37 = 809,424.56/x
3. Step 3: Cross multiply
   2,140,053.68x = 3,209,147.37 × 809,424.56
4. Step 4: Simplify right side
   2,140,053.68x = 2,597,562,705,960.28
5. Step 5: Solve for x
   x = 2,597,562,705,960.28/2,140,053.68
6. Step 6: Final answer
   x = 1,213,783.90