Finding the Fourth Proportional to 2,863.88, 4,291.50 and 1,131.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,863.88 : 4,291.50 = 1,131.56 : x
2. Step 2: Convert to fraction form
   2,863.88/4,291.50 = 1,131.56/x
3. Step 3: Cross multiply
   2,863.88x = 4,291.50 × 1,131.56
4. Step 4: Simplify right side
   2,863.88x = 4,856,089.74
5. Step 5: Solve for x
   x = 4,856,089.74/2,863.88
6. Step 6: Final answer
   x = 1,695.63