Finding the Fourth Proportional to 778,807.69, 1,074,768.61 and 456,750.07

Step by Step Solution

1. Step 1: Write the proportion equation
   778,807.69 : 1,074,768.61 = 456,750.07 : x
2. Step 2: Convert to fraction form
   778,807.69/1,074,768.61 = 456,750.07/x
3. Step 3: Cross multiply
   778,807.69x = 1,074,768.61 × 456,750.07
4. Step 4: Simplify right side
   778,807.69x = 490,900,632,880.63
5. Step 5: Solve for x
   x = 490,900,632,880.63/778,807.69
6. Step 6: Final answer
   x = 630,323.30