Finding the Fourth Proportional to 2,109.56, 3,165.35 and 1,135.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.56 : 3,165.35 = 1,135.53 : x
2. Step 2: Convert to fraction form
   2,109.56/3,165.35 = 1,135.53/x
3. Step 3: Cross multiply
   2,109.56x = 3,165.35 × 1,135.53
4. Step 4: Simplify right side
   2,109.56x = 3,594,349.89
5. Step 5: Solve for x
   x = 3,594,349.89/2,109.56
6. Step 6: Final answer
   x = 1,703.84