Finding the Fourth Proportional to 1,489,456.72, 2,055,388.84 and 810,395.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,489,456.72 : 2,055,388.84 = 810,395.92 : x
2. Step 2: Convert to fraction form
   1,489,456.72/2,055,388.84 = 810,395.92/x
3. Step 3: Cross multiply
   1,489,456.72x = 2,055,388.84 × 810,395.92
4. Step 4: Simplify right side
   1,489,456.72x = 1,665,678,729,949.53
5. Step 5: Solve for x
   x = 1,665,678,729,949.53/1,489,456.72
6. Step 6: Final answer
   x = 1,118,312.94