Finding the Fourth Proportional to 2,721,196.80, 4,082,385.60 and 827,889

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721,196.80 : 4,082,385.60 = 827,889 : x
2. Step 2: Convert to fraction form
   2,721,196.80/4,082,385.60 = 827,889/x
3. Step 3: Cross multiply
   2,721,196.80x = 4,082,385.60 × 827,889
4. Step 4: Simplify right side
   2,721,196.80x = 3,379,762,131,998.40
5. Step 5: Solve for x
   x = 3,379,762,131,998.40/2,721,196.80
6. Step 6: Final answer
   x = 1,242,013.12