Finding the Fourth Proportional to 1,872.72, 2,584.59 and 1,086.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,872.72 : 2,584.59 = 1,086.81 : x
2. Step 2: Convert to fraction form
   1,872.72/2,584.59 = 1,086.81/x
3. Step 3: Cross multiply
   1,872.72x = 2,584.59 × 1,086.81
4. Step 4: Simplify right side
   1,872.72x = 2,808,958.26
5. Step 5: Solve for x
   x = 2,808,958.26/1,872.72
6. Step 6: Final answer
   x = 1,499.93