Finding the Fourth Proportional to 2,086.89, 2,878.72 and 1,489.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.89 : 2,878.72 = 1,489.52 : x
2. Step 2: Convert to fraction form
   2,086.89/2,878.72 = 1,489.52/x
3. Step 3: Cross multiply
   2,086.89x = 2,878.72 × 1,489.52
4. Step 4: Simplify right side
   2,086.89x = 4,287,892.90
5. Step 5: Solve for x
   x = 4,287,892.90/2,086.89
6. Step 6: Final answer
   x = 2,054.68