Finding the Fourth Proportional to 2,120,243.38, 3,180,398.78 and 522,806.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120,243.38 : 3,180,398.78 = 522,806.94 : x
2. Step 2: Convert to fraction form
   2,120,243.38/3,180,398.78 = 522,806.94/x
3. Step 3: Cross multiply
   2,120,243.38x = 3,180,398.78 × 522,806.94
4. Step 4: Simplify right side
   2,120,243.38x = 1,662,734,555,458.55
5. Step 5: Solve for x
   x = 1,662,734,555,458.55/2,120,243.38
6. Step 6: Final answer
   x = 784,218.72