Finding the Fourth Proportional to 1,623,018.83, 2,239,061.94 and 978,072.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,623,018.83 : 2,239,061.94 = 978,072.53 : x
2. Step 2: Convert to fraction form
   1,623,018.83/2,239,061.94 = 978,072.53/x
3. Step 3: Cross multiply
   1,623,018.83x = 2,239,061.94 × 978,072.53
4. Step 4: Simplify right side
   1,623,018.83x = 2,189,964,965,287.20
5. Step 5: Solve for x
   x = 2,189,964,965,287.20/1,623,018.83
6. Step 6: Final answer
   x = 1,349,315.81