Finding the Fourth Proportional to 2,109.52, 3,165.10 and 1,135.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.52 : 3,165.10 = 1,135.12 : x
2. Step 2: Convert to fraction form
   2,109.52/3,165.10 = 1,135.12/x
3. Step 3: Cross multiply
   2,109.52x = 3,165.10 × 1,135.12
4. Step 4: Simplify right side
   2,109.52x = 3,592,768.31
5. Step 5: Solve for x
   x = 3,592,768.31/2,109.52
6. Step 6: Final answer
   x = 1,703.12