Finding the Fourth Proportional to 2,105.33, 2,905.34 and 1,161.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.33 : 2,905.34 = 1,161.07 : x
2. Step 2: Convert to fraction form
   2,105.33/2,905.34 = 1,161.07/x
3. Step 3: Cross multiply
   2,105.33x = 2,905.34 × 1,161.07
4. Step 4: Simplify right side
   2,105.33x = 3,373,290.05
5. Step 5: Solve for x
   x = 3,373,290.05/2,105.33
6. Step 6: Final answer
   x = 1,602.27