Finding the Fourth Proportional to 2,618.40, 3,905.54 and 2,436.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.40 : 3,905.54 = 2,436.96 : x
2. Step 2: Convert to fraction form
   2,618.40/3,905.54 = 2,436.96/x
3. Step 3: Cross multiply
   2,618.40x = 3,905.54 × 2,436.96
4. Step 4: Simplify right side
   2,618.40x = 9,517,644.76
5. Step 5: Solve for x
   x = 9,517,644.76/2,618.40
6. Step 6: Final answer
   x = 3,634.91