Finding the Fourth Proportional to 2,589.72, 3,881.34 and 1,127.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589.72 : 3,881.34 = 1,127.22 : x
2. Step 2: Convert to fraction form
   2,589.72/3,881.34 = 1,127.22/x
3. Step 3: Cross multiply
   2,589.72x = 3,881.34 × 1,127.22
4. Step 4: Simplify right side
   2,589.72x = 4,375,124.07
5. Step 5: Solve for x
   x = 4,375,124.07/2,589.72
6. Step 6: Final answer
   x = 1,689.42