Finding the Fourth Proportional to 3,618.01, 4,992.57 and 2,105.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,618.01 : 4,992.57 = 2,105.34 : x
2. Step 2: Convert to fraction form
   3,618.01/4,992.57 = 2,105.34/x
3. Step 3: Cross multiply
   3,618.01x = 4,992.57 × 2,105.34
4. Step 4: Simplify right side
   3,618.01x = 10,511,038.60
5. Step 5: Solve for x
   x = 10,511,038.60/3,618.01
6. Step 6: Final answer
   x = 2,905.20