Finding the Fourth Proportional to 2,287.98, 3,154.55 and 1,867.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.98 : 3,154.55 = 1,867.86 : x
2. Step 2: Convert to fraction form
   2,287.98/3,154.55 = 1,867.86/x
3. Step 3: Cross multiply
   2,287.98x = 3,154.55 × 1,867.86
4. Step 4: Simplify right side
   2,287.98x = 5,892,248.42
5. Step 5: Solve for x
   x = 5,892,248.42/2,287.98
6. Step 6: Final answer
   x = 2,575.31