Finding the Fourth Proportional to 1,139,065.94, 1,571,910.50 and 622,822.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,065.94 : 1,571,910.50 = 622,822.47 : x
2. Step 2: Convert to fraction form
   1,139,065.94/1,571,910.50 = 622,822.47/x
3. Step 3: Cross multiply
   1,139,065.94x = 1,571,910.50 × 622,822.47
4. Step 4: Simplify right side
   1,139,065.94x = 979,021,175,891.33
5. Step 5: Solve for x
   x = 979,021,175,891.33/1,139,065.94
6. Step 6: Final answer
   x = 859,494.73