Finding the Fourth Proportional to 2,853.26, 4,276.59 and 1,311.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,853.26 : 4,276.59 = 1,311.02 : x
2. Step 2: Convert to fraction form
   2,853.26/4,276.59 = 1,311.02/x
3. Step 3: Cross multiply
   2,853.26x = 4,276.59 × 1,311.02
4. Step 4: Simplify right side
   2,853.26x = 5,606,695.02
5. Step 5: Solve for x
   x = 5,606,695.02/2,853.26
6. Step 6: Final answer
   x = 1,965.01