Finding the Fourth Proportional to 778,724.89, 1,074,870.17 and 456,504.73

Step by Step Solution

1. Step 1: Write the proportion equation
   778,724.89 : 1,074,870.17 = 456,504.73 : x
2. Step 2: Convert to fraction form
   778,724.89/1,074,870.17 = 456,504.73/x
3. Step 3: Cross multiply
   778,724.89x = 1,074,870.17 × 456,504.73
4. Step 4: Simplify right side
   778,724.89x = 490,683,313,483.10
5. Step 5: Solve for x
   x = 490,683,313,483.10/778,724.89
6. Step 6: Final answer
   x = 630,111.25