Finding the Fourth Proportional to 978,624.72, 1,467,939.32 and 268,662.48

Step by Step Solution

1. Step 1: Write the proportion equation
   978,624.72 : 1,467,939.32 = 268,662.48 : x
2. Step 2: Convert to fraction form
   978,624.72/1,467,939.32 = 268,662.48/x
3. Step 3: Cross multiply
   978,624.72x = 1,467,939.32 × 268,662.48
4. Step 4: Simplify right side
   978,624.72x = 394,380,218,200.71
5. Step 5: Solve for x
   x = 394,380,218,200.71/978,624.72
6. Step 6: Final answer
   x = 402,994.33