Finding the Fourth Proportional to 726,498.76, 1,089,737.17 and 326,857.31

Step by Step Solution

1. Step 1: Write the proportion equation
   726,498.76 : 1,089,737.17 = 326,857.31 : x
2. Step 2: Convert to fraction form
   726,498.76/1,089,737.17 = 326,857.31/x
3. Step 3: Cross multiply
   726,498.76x = 1,089,737.17 × 326,857.31
4. Step 4: Simplify right side
   726,498.76x = 356,188,559,993.21
5. Step 5: Solve for x
   x = 356,188,559,993.21/726,498.76
6. Step 6: Final answer
   x = 490,281.03