Finding the Fourth Proportional to 2,175.72, 3,260.88 and 1,589.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175.72 : 3,260.88 = 1,589.28 : x
2. Step 2: Convert to fraction form
   2,175.72/3,260.88 = 1,589.28/x
3. Step 3: Cross multiply
   2,175.72x = 3,260.88 × 1,589.28
4. Step 4: Simplify right side
   2,175.72x = 5,182,451.37
5. Step 5: Solve for x
   x = 5,182,451.37/2,175.72
6. Step 6: Final answer
   x = 2,381.95