Finding the Fourth Proportional to 726,905.72, 1,003,112.55 and 404,608.88

Step by Step Solution

1. Step 1: Write the proportion equation
   726,905.72 : 1,003,112.55 = 404,608.88 : x
2. Step 2: Convert to fraction form
   726,905.72/1,003,112.55 = 404,608.88/x
3. Step 3: Cross multiply
   726,905.72x = 1,003,112.55 × 404,608.88
4. Step 4: Simplify right side
   726,905.72x = 405,868,247,877.23
5. Step 5: Solve for x
   x = 405,868,247,877.23/726,905.72
6. Step 6: Final answer
   x = 558,350.60