Finding the Fourth Proportional to 1,892,411.86, 2,838,658.12 and 678,067.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,892,411.86 : 2,838,658.12 = 678,067.80 : x
2. Step 2: Convert to fraction form
   1,892,411.86/2,838,658.12 = 678,067.80/x
3. Step 3: Cross multiply
   1,892,411.86x = 2,838,658.12 × 678,067.80
4. Step 4: Simplify right side
   1,892,411.86x = 1,924,802,666,380.54
5. Step 5: Solve for x
   x = 1,924,802,666,380.54/1,892,411.86
6. Step 6: Final answer
   x = 1,017,116.15