Finding the Fourth Proportional to 793,969.82, 1,093,674.90 and 640,578.78

Step by Step Solution

1. Step 1: Write the proportion equation
   793,969.82 : 1,093,674.90 = 640,578.78 : x
2. Step 2: Convert to fraction form
   793,969.82/1,093,674.90 = 640,578.78/x
3. Step 3: Cross multiply
   793,969.82x = 1,093,674.90 × 640,578.78
4. Step 4: Simplify right side
   793,969.82x = 700,584,933,158.62
5. Step 5: Solve for x
   x = 700,584,933,158.62/793,969.82
6. Step 6: Final answer
   x = 882,382.32