Finding the Fourth Proportional to 2,100,298.96, 3,150,296.15 and 820,665.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100,298.96 : 3,150,296.15 = 820,665.82 : x
2. Step 2: Convert to fraction form
   2,100,298.96/3,150,296.15 = 820,665.82/x
3. Step 3: Cross multiply
   2,100,298.96x = 3,150,296.15 × 820,665.82
4. Step 4: Simplify right side
   2,100,298.96x = 2,585,340,373,182.59
5. Step 5: Solve for x
   x = 2,585,340,373,182.59/2,100,298.96
6. Step 6: Final answer
   x = 1,230,939.22