Finding the Fourth Proportional to 2,789.15, 4,181.42 and 2,175.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.15 : 4,181.42 = 2,175.57 : x
2. Step 2: Convert to fraction form
   2,789.15/4,181.42 = 2,175.57/x
3. Step 3: Cross multiply
   2,789.15x = 4,181.42 × 2,175.57
4. Step 4: Simplify right side
   2,789.15x = 9,096,961.03
5. Step 5: Solve for x
   x = 9,096,961.03/2,789.15
6. Step 6: Final answer
   x = 3,261.56