Finding the Fourth Proportional to 1,016,039.27, 1,521,069.23 and 678,242.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016,039.27 : 1,521,069.23 = 678,242.09 : x
2. Step 2: Convert to fraction form
   1,016,039.27/1,521,069.23 = 678,242.09/x
3. Step 3: Cross multiply
   1,016,039.27x = 1,521,069.23 × 678,242.09
4. Step 4: Simplify right side
   1,016,039.27x = 1,031,653,162,593.33
5. Step 5: Solve for x
   x = 1,031,653,162,593.33/1,016,039.27
6. Step 6: Final answer
   x = 1,015,367.42