Finding the Fourth Proportional to 627,518.28, 865,980.94 and 341,039.05

Step by Step Solution

1. Step 1: Write the proportion equation
   627,518.28 : 865,980.94 = 341,039.05 : x
2. Step 2: Convert to fraction form
   627,518.28/865,980.94 = 341,039.05/x
3. Step 3: Cross multiply
   627,518.28x = 865,980.94 × 341,039.05
4. Step 4: Simplify right side
   627,518.28x = 295,333,317,095.71
5. Step 5: Solve for x
   x = 295,333,317,095.71/627,518.28
6. Step 6: Final answer
   x = 470,636.99