Finding the Fourth Proportional to 2,087.52, 2,872.10 and 1,806.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.52 : 2,872.10 = 1,806.88 : x
2. Step 2: Convert to fraction form
   2,087.52/2,872.10 = 1,806.88/x
3. Step 3: Cross multiply
   2,087.52x = 2,872.10 × 1,806.88
4. Step 4: Simplify right side
   2,087.52x = 5,189,540.05
5. Step 5: Solve for x
   x = 5,189,540.05/2,087.52
6. Step 6: Final answer
   x = 2,485.98