Finding the Fourth Proportional to 978,625.72, 1,467,940.82 and 268,663.48

Step by Step Solution

1. Step 1: Write the proportion equation
   978,625.72 : 1,467,940.82 = 268,663.48 : x
2. Step 2: Convert to fraction form
   978,625.72/1,467,940.82 = 268,663.48/x
3. Step 3: Cross multiply
   978,625.72x = 1,467,940.82 × 268,663.48
4. Step 4: Simplify right side
   978,625.72x = 394,382,089,135.25
5. Step 5: Solve for x
   x = 394,382,089,135.25/978,625.72
6. Step 6: Final answer
   x = 402,995.83