Finding the Fourth Proportional to 2,059.62, 3,089.70 and 1,085.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.62 : 3,089.70 = 1,085.76 : x
2. Step 2: Convert to fraction form
   2,059.62/3,089.70 = 1,085.76/x
3. Step 3: Cross multiply
   2,059.62x = 3,089.70 × 1,085.76
4. Step 4: Simplify right side
   2,059.62x = 3,354,672.67
5. Step 5: Solve for x
   x = 3,354,672.67/2,059.62
6. Step 6: Final answer
   x = 1,628.78