Finding the Fourth Proportional to 978,839.58, 1,468,256.53 and 268,868.30

Step by Step Solution

1. Step 1: Write the proportion equation
   978,839.58 : 1,468,256.53 = 268,868.30 : x
2. Step 2: Convert to fraction form
   978,839.58/1,468,256.53 = 268,868.30/x
3. Step 3: Cross multiply
   978,839.58x = 1,468,256.53 × 268,868.30
4. Step 4: Simplify right side
   978,839.58x = 394,767,637,185.00
5. Step 5: Solve for x
   x = 394,767,637,185.00/978,839.58
6. Step 6: Final answer
   x = 403,301.67