Finding the Fourth Proportional to 978,495.12, 1,467,729.72 and 268,522.56

Step by Step Solution

1. Step 1: Write the proportion equation
   978,495.12 : 1,467,729.72 = 268,522.56 : x
2. Step 2: Convert to fraction form
   978,495.12/1,467,729.72 = 268,522.56/x
3. Step 3: Cross multiply
   978,495.12x = 1,467,729.72 × 268,522.56
4. Step 4: Simplify right side
   978,495.12x = 394,118,541,802.48
5. Step 5: Solve for x
   x = 394,118,541,802.48/978,495.12
6. Step 6: Final answer
   x = 402,780.28