Finding the Fourth Proportional to 1,873.28, 2,584.69 and 1,086.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,873.28 : 2,584.69 = 1,086.86 : x
2. Step 2: Convert to fraction form
   1,873.28/2,584.69 = 1,086.86/x
3. Step 3: Cross multiply
   1,873.28x = 2,584.69 × 1,086.86
4. Step 4: Simplify right side
   1,873.28x = 2,809,180.53
5. Step 5: Solve for x
   x = 2,809,180.53/1,873.28
6. Step 6: Final answer
   x = 1,499.61