Finding the Fourth Proportional to 823,321.89, 1,234,981.42 and 424,076.81

Step by Step Solution

1. Step 1: Write the proportion equation
   823,321.89 : 1,234,981.42 = 424,076.81 : x
2. Step 2: Convert to fraction form
   823,321.89/1,234,981.42 = 424,076.81/x
3. Step 3: Cross multiply
   823,321.89x = 1,234,981.42 × 424,076.81
4. Step 4: Simplify right side
   823,321.89x = 523,726,973,767.77
5. Step 5: Solve for x
   x = 523,726,973,767.77/823,321.89
6. Step 6: Final answer
   x = 636,114.48