Finding the Fourth Proportional to 693,784.62, 957,717.89 and 421,939.83

Step by Step Solution

1. Step 1: Write the proportion equation
   693,784.62 : 957,717.89 = 421,939.83 : x
2. Step 2: Convert to fraction form
   693,784.62/957,717.89 = 421,939.83/x
3. Step 3: Cross multiply
   693,784.62x = 957,717.89 × 421,939.83
4. Step 4: Simplify right side
   693,784.62x = 404,099,324,749.41
5. Step 5: Solve for x
   x = 404,099,324,749.41/693,784.62
6. Step 6: Final answer
   x = 582,456.45