Finding the Fourth Proportional to 2,069.55, 3,105.61 and 836.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.55 : 3,105.61 = 836.97 : x
2. Step 2: Convert to fraction form
   2,069.55/3,105.61 = 836.97/x
3. Step 3: Cross multiply
   2,069.55x = 3,105.61 × 836.97
4. Step 4: Simplify right side
   2,069.55x = 2,599,303.53
5. Step 5: Solve for x
   x = 2,599,303.53/2,069.55
6. Step 6: Final answer
   x = 1,255.98