Finding the Fourth Proportional to 1,456,414.72, 2,184,619 and 391,456.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456,414.72 : 2,184,619 = 391,456.82 : x
2. Step 2: Convert to fraction form
   1,456,414.72/2,184,619 = 391,456.82/x
3. Step 3: Cross multiply
   1,456,414.72x = 2,184,619 × 391,456.82
4. Step 4: Simplify right side
   1,456,414.72x = 855,184,006,651.58
5. Step 5: Solve for x
   x = 855,184,006,651.58/1,456,414.72
6. Step 6: Final answer
   x = 587,184.40