Finding the Fourth Proportional to 2,108.94, 3,164.77 and 1,135.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.94 : 3,164.77 = 1,135.72 : x
2. Step 2: Convert to fraction form
   2,108.94/3,164.77 = 1,135.72/x
3. Step 3: Cross multiply
   2,108.94x = 3,164.77 × 1,135.72
4. Step 4: Simplify right side
   2,108.94x = 3,594,297.96
5. Step 5: Solve for x
   x = 3,594,297.96/2,108.94
6. Step 6: Final answer
   x = 1,704.32