Finding the Fourth Proportional to 656,870.82, 906,481.33 and 355,064.82

Step by Step Solution

1. Step 1: Write the proportion equation
   656,870.82 : 906,481.33 = 355,064.82 : x
2. Step 2: Convert to fraction form
   656,870.82/906,481.33 = 355,064.82/x
3. Step 3: Cross multiply
   656,870.82x = 906,481.33 × 355,064.82
4. Step 4: Simplify right side
   656,870.82x = 321,859,623,962.08
5. Step 5: Solve for x
   x = 321,859,623,962.08/656,870.82
6. Step 6: Final answer
   x = 489,989.23