Finding the Fourth Proportional to 2,131.24, 3,201.52 and 1,518.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.24 : 3,201.52 = 1,518.88 : x
2. Step 2: Convert to fraction form
   2,131.24/3,201.52 = 1,518.88/x
3. Step 3: Cross multiply
   2,131.24x = 3,201.52 × 1,518.88
4. Step 4: Simplify right side
   2,131.24x = 4,862,717.10
5. Step 5: Solve for x
   x = 4,862,717.10/2,131.24
6. Step 6: Final answer
   x = 2,281.64