Finding the Fourth Proportional to 1,191,857.98, 1,644,811.77 and 647,992.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191,857.98 : 1,644,811.77 = 647,992.09 : x
2. Step 2: Convert to fraction form
   1,191,857.98/1,644,811.77 = 647,992.09/x
3. Step 3: Cross multiply
   1,191,857.98x = 1,644,811.77 × 647,992.09
4. Step 4: Simplify right side
   1,191,857.98x = 1,065,825,008,087.86
5. Step 5: Solve for x
   x = 1,065,825,008,087.86/1,191,857.98
6. Step 6: Final answer
   x = 894,255.04