Finding the Fourth Proportional to 2,063,928.48, 3,095,783.34 and 643,821.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,063,928.48 : 3,095,783.34 = 643,821.90 : x
2. Step 2: Convert to fraction form
   2,063,928.48/3,095,783.34 = 643,821.90/x
3. Step 3: Cross multiply
   2,063,928.48x = 3,095,783.34 × 643,821.90
4. Step 4: Simplify right side
   2,063,928.48x = 1,993,133,111,947.15
5. Step 5: Solve for x
   x = 1,993,133,111,947.15/2,063,928.48
6. Step 6: Final answer
   x = 965,698.73