Finding the Fourth Proportional to 2,853.76, 4,277.34 and 1,311.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,853.76 : 4,277.34 = 1,311.52 : x
2. Step 2: Convert to fraction form
   2,853.76/4,277.34 = 1,311.52/x
3. Step 3: Cross multiply
   2,853.76x = 4,277.34 × 1,311.52
4. Step 4: Simplify right side
   2,853.76x = 5,609,816.96
5. Step 5: Solve for x
   x = 5,609,816.96/2,853.76
6. Step 6: Final answer
   x = 1,965.76