Finding the Fourth Proportional to 978,997.76, 1,468,512.84 and 269,021.42

Step by Step Solution

1. Step 1: Write the proportion equation
   978,997.76 : 1,468,512.84 = 269,021.42 : x
2. Step 2: Convert to fraction form
   978,997.76/1,468,512.84 = 269,021.42/x
3. Step 3: Cross multiply
   978,997.76x = 1,468,512.84 × 269,021.42
4. Step 4: Simplify right side
   978,997.76x = 395,061,409,505.03
5. Step 5: Solve for x
   x = 395,061,409,505.03/978,997.76
6. Step 6: Final answer
   x = 403,536.58