Finding the Fourth Proportional to 806,499.32, 1,209,752.37 and 326,736.45

Step by Step Solution

1. Step 1: Write the proportion equation
   806,499.32 : 1,209,752.37 = 326,736.45 : x
2. Step 2: Convert to fraction form
   806,499.32/1,209,752.37 = 326,736.45/x
3. Step 3: Cross multiply
   806,499.32x = 1,209,752.37 × 326,736.45
4. Step 4: Simplify right side
   806,499.32x = 395,270,194,752.89
5. Step 5: Solve for x
   x = 395,270,194,752.89/806,499.32
6. Step 6: Final answer
   x = 490,106.05