Finding the Fourth Proportional to 2,086.23, 2,878.79 and 1,246.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.23 : 2,878.79 = 1,246.76 : x
2. Step 2: Convert to fraction form
   2,086.23/2,878.79 = 1,246.76/x
3. Step 3: Cross multiply
   2,086.23x = 2,878.79 × 1,246.76
4. Step 4: Simplify right side
   2,086.23x = 3,589,160.22
5. Step 5: Solve for x
   x = 3,589,160.22/2,086.23
6. Step 6: Final answer
   x = 1,720.41