Finding the Fourth Proportional to 2,456.89, 3,685.28 and 607.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.89 : 3,685.28 = 607.96 : x
2. Step 2: Convert to fraction form
   2,456.89/3,685.28 = 607.96/x
3. Step 3: Cross multiply
   2,456.89x = 3,685.28 × 607.96
4. Step 4: Simplify right side
   2,456.89x = 2,240,502.83
5. Step 5: Solve for x
   x = 2,240,502.83/2,456.89
6. Step 6: Final answer
   x = 911.93