Finding the Fourth Proportional to 2,456.89, 3,685.25 and 607.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.89 : 3,685.25 = 607.99 : x
2. Step 2: Convert to fraction form
   2,456.89/3,685.25 = 607.99/x
3. Step 3: Cross multiply
   2,456.89x = 3,685.25 × 607.99
4. Step 4: Simplify right side
   2,456.89x = 2,240,573.68
5. Step 5: Solve for x
   x = 2,240,573.68/2,456.89
6. Step 6: Final answer
   x = 911.96