Finding the Fourth Proportional to 2,086.20, 2,878.86 and 1,154.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.20 : 2,878.86 = 1,154.76 : x
2. Step 2: Convert to fraction form
   2,086.20/2,878.86 = 1,154.76/x
3. Step 3: Cross multiply
   2,086.20x = 2,878.86 × 1,154.76
4. Step 4: Simplify right side
   2,086.20x = 3,324,392.37
5. Step 5: Solve for x
   x = 3,324,392.37/2,086.20
6. Step 6: Final answer
   x = 1,593.52