Finding the Fourth Proportional to 2,218,866.24, 3,062,410.98 and 1,288,428.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218,866.24 : 3,062,410.98 = 1,288,428.96 : x
2. Step 2: Convert to fraction form
   2,218,866.24/3,062,410.98 = 1,288,428.96/x
3. Step 3: Cross multiply
   2,218,866.24x = 3,062,410.98 × 1,288,428.96
4. Step 4: Simplify right side
   2,218,866.24x = 3,945,698,994,053.98
5. Step 5: Solve for x
   x = 3,945,698,994,053.98/2,218,866.24
6. Step 6: Final answer
   x = 1,778,250.05