Finding the Fourth Proportional to 2,411.72, 3,617.81 and 930.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.72 : 3,617.81 = 930.49 : x
2. Step 2: Convert to fraction form
   2,411.72/3,617.81 = 930.49/x
3. Step 3: Cross multiply
   2,411.72x = 3,617.81 × 930.49
4. Step 4: Simplify right side
   2,411.72x = 3,366,331.05
5. Step 5: Solve for x
   x = 3,366,331.05/2,411.72
6. Step 6: Final answer
   x = 1,395.82