Finding the Fourth Proportional to 2,081.94, 3,122.92 and 1,157.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.94 : 3,122.92 = 1,157.28 : x
2. Step 2: Convert to fraction form
   2,081.94/3,122.92 = 1,157.28/x
3. Step 3: Cross multiply
   2,081.94x = 3,122.92 × 1,157.28
4. Step 4: Simplify right side
   2,081.94x = 3,614,092.86
5. Step 5: Solve for x
   x = 3,614,092.86/2,081.94
6. Step 6: Final answer
   x = 1,735.93