Finding the Fourth Proportional to 2,105.18, 2,905.01 and 1,160.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.18 : 2,905.01 = 1,160.92 : x
2. Step 2: Convert to fraction form
   2,105.18/2,905.01 = 1,160.92/x
3. Step 3: Cross multiply
   2,105.18x = 2,905.01 × 1,160.92
4. Step 4: Simplify right side
   2,105.18x = 3,372,484.21
5. Step 5: Solve for x
   x = 3,372,484.21/2,105.18
6. Step 6: Final answer
   x = 1,601.99