Finding the Fourth Proportional to 726,717.59, 1,002,917.39 and 404,426.69

Step by Step Solution

1. Step 1: Write the proportion equation
   726,717.59 : 1,002,917.39 = 404,426.69 : x
2. Step 2: Convert to fraction form
   726,717.59/1,002,917.39 = 404,426.69/x
3. Step 3: Cross multiply
   726,717.59x = 1,002,917.39 × 404,426.69
4. Step 4: Simplify right side
   726,717.59x = 405,606,560,381.14
5. Step 5: Solve for x
   x = 405,606,560,381.14/726,717.59
6. Step 6: Final answer
   x = 558,135.05