Finding the Fourth Proportional to 815,298.62, 1,222,552.83 and 341,856.86

Step by Step Solution

1. Step 1: Write the proportion equation
   815,298.62 : 1,222,552.83 = 341,856.86 : x
2. Step 2: Convert to fraction form
   815,298.62/1,222,552.83 = 341,856.86/x
3. Step 3: Cross multiply
   815,298.62x = 1,222,552.83 × 341,856.86
4. Step 4: Simplify right side
   815,298.62x = 417,938,071,647.91
5. Step 5: Solve for x
   x = 417,938,071,647.91/815,298.62
6. Step 6: Final answer
   x = 512,619.62