Finding the Fourth Proportional to 2,005.73, 3,015.31 and 1,618.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005.73 : 3,015.31 = 1,618.44 : x
2. Step 2: Convert to fraction form
   2,005.73/3,015.31 = 1,618.44/x
3. Step 3: Cross multiply
   2,005.73x = 3,015.31 × 1,618.44
4. Step 4: Simplify right side
   2,005.73x = 4,880,098.32
5. Step 5: Solve for x
   x = 4,880,098.32/2,005.73
6. Step 6: Final answer
   x = 2,433.08