Finding the Fourth Proportional to 744,997.50, 1,028,096.55 and 405,468.18

Step by Step Solution

1. Step 1: Write the proportion equation
   744,997.50 : 1,028,096.55 = 405,468.18 : x
2. Step 2: Convert to fraction form
   744,997.50/1,028,096.55 = 405,468.18/x
3. Step 3: Cross multiply
   744,997.50x = 1,028,096.55 × 405,468.18
4. Step 4: Simplify right side
   744,997.50x = 416,860,436,992.78
5. Step 5: Solve for x
   x = 416,860,436,992.78/744,997.50
6. Step 6: Final answer
   x = 559,546.09