Finding the Fourth Proportional to 2,089.56, 3,134.34 and 628.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,089.56 : 3,134.34 = 628.72 : x
2. Step 2: Convert to fraction form
   2,089.56/3,134.34 = 628.72/x
3. Step 3: Cross multiply
   2,089.56x = 3,134.34 × 628.72
4. Step 4: Simplify right side
   2,089.56x = 1,970,622.24
5. Step 5: Solve for x
   x = 1,970,622.24/2,089.56
6. Step 6: Final answer
   x = 943.08