Finding the Fourth Proportional to 612,997.50, 845,940.78 and 341,076.86

Step by Step Solution

1. Step 1: Write the proportion equation
   612,997.50 : 845,940.78 = 341,076.86 : x
2. Step 2: Convert to fraction form
   612,997.50/845,940.78 = 341,076.86/x
3. Step 3: Cross multiply
   612,997.50x = 845,940.78 × 341,076.86
4. Step 4: Simplify right side
   612,997.50x = 288,530,823,930.93
5. Step 5: Solve for x
   x = 288,530,823,930.93/612,997.50
6. Step 6: Final answer
   x = 470,688.42