Finding the Fourth Proportional to 2,089.52, 3,134.18 and 856.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,089.52 : 3,134.18 = 856.58 : x
2. Step 2: Convert to fraction form
   2,089.52/3,134.18 = 856.58/x
3. Step 3: Cross multiply
   2,089.52x = 3,134.18 × 856.58
4. Step 4: Simplify right side
   2,089.52x = 2,684,675.90
5. Step 5: Solve for x
   x = 2,684,675.90/2,089.52
6. Step 6: Final answer
   x = 1,284.83