Finding the Fourth Proportional to 2,105.89, 2,905.99 and 1,161.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.89 : 2,905.99 = 1,161.62 : x
2. Step 2: Convert to fraction form
   2,105.89/2,905.99 = 1,161.62/x
3. Step 3: Cross multiply
   2,105.89x = 2,905.99 × 1,161.62
4. Step 4: Simplify right side
   2,105.89x = 3,375,650.30
5. Step 5: Solve for x
   x = 3,375,650.30/2,105.89
6. Step 6: Final answer
   x = 1,602.96