Finding the Fourth Proportional to 1,352,424.72, 2,028,834.90 and 405,870.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,352,424.72 : 2,028,834.90 = 405,870.24 : x
2. Step 2: Convert to fraction form
   1,352,424.72/2,028,834.90 = 405,870.24/x
3. Step 3: Cross multiply
   1,352,424.72x = 2,028,834.90 × 405,870.24
4. Step 4: Simplify right side
   1,352,424.72x = 823,443,707,783.38
5. Step 5: Solve for x
   x = 823,443,707,783.38/1,352,424.72
6. Step 6: Final answer
   x = 608,864.73