Finding the Fourth Proportional to 745,087.82, 1,028,192.60 and 422,778.72

Step by Step Solution

1. Step 1: Write the proportion equation
   745,087.82 : 1,028,192.60 = 422,778.72 : x
2. Step 2: Convert to fraction form
   745,087.82/1,028,192.60 = 422,778.72/x
3. Step 3: Cross multiply
   745,087.82x = 1,028,192.60 × 422,778.72
4. Step 4: Simplify right side
   745,087.82x = 434,697,951,341.47
5. Step 5: Solve for x
   x = 434,697,951,341.47/745,087.82
6. Step 6: Final answer
   x = 583,418.41