Finding the Fourth Proportional to 892,326, 1,231,429.32 and 489,918

Step by Step Solution

1. Step 1: Write the proportion equation
   892,326 : 1,231,429.32 = 489,918 : x
2. Step 2: Convert to fraction form
   892,326/1,231,429.32 = 489,918/x
3. Step 3: Cross multiply
   892,326x = 1,231,429.32 × 489,918
4. Step 4: Simplify right side
   892,326x = 603,299,389,595.76
5. Step 5: Solve for x
   x = 603,299,389,595.76/892,326
6. Step 6: Final answer
   x = 676,097.51