Finding the Fourth Proportional to 2,138,558.48, 3,208,553.87 and 699,308.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138,558.48 : 3,208,553.87 = 699,308.25 : x
2. Step 2: Convert to fraction form
   2,138,558.48/3,208,553.87 = 699,308.25/x
3. Step 3: Cross multiply
   2,138,558.48x = 3,208,553.87 × 699,308.25
4. Step 4: Simplify right side
   2,138,558.48x = 2,243,768,188,363.89
5. Step 5: Solve for x
   x = 2,243,768,188,363.89/2,138,558.48
6. Step 6: Final answer
   x = 1,049,196.56