Finding the Fourth Proportional to 2,059.44, 3,091.68 and 1,086.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.44 : 3,091.68 = 1,086.12 : x
2. Step 2: Convert to fraction form
   2,059.44/3,091.68 = 1,086.12/x
3. Step 3: Cross multiply
   2,059.44x = 3,091.68 × 1,086.12
4. Step 4: Simplify right side
   2,059.44x = 3,357,935.48
5. Step 5: Solve for x
   x = 3,357,935.48/2,059.44
6. Step 6: Final answer
   x = 1,630.51