Finding the Fourth Proportional to 2,059.84, 3,091.92 and 1,086.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.84 : 3,091.92 = 1,086.16 : x
2. Step 2: Convert to fraction form
   2,059.84/3,091.92 = 1,086.16/x
3. Step 3: Cross multiply
   2,059.84x = 3,091.92 × 1,086.16
4. Step 4: Simplify right side
   2,059.84x = 3,358,319.83
5. Step 5: Solve for x
   x = 3,358,319.83/2,059.84
6. Step 6: Final answer
   x = 1,630.38