Finding the Fourth Proportional to 2,862,796.78, 3,950,667.77 and 1,639,121.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,862,796.78 : 3,950,667.77 = 1,639,121.07 : x
2. Step 2: Convert to fraction form
   2,862,796.78/3,950,667.77 = 1,639,121.07/x
3. Step 3: Cross multiply
   2,862,796.78x = 3,950,667.77 × 1,639,121.07
4. Step 4: Simplify right side
   2,862,796.78x = 6,475,622,788,996.31
5. Step 5: Solve for x
   x = 6,475,622,788,996.31/2,862,796.78
6. Step 6: Final answer
   x = 2,261,991.78