Finding the Fourth Proportional to 2,587.89, 3,882.51 and 945.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,587.89 : 3,882.51 = 945.81 : x
2. Step 2: Convert to fraction form
   2,587.89/3,882.51 = 945.81/x
3. Step 3: Cross multiply
   2,587.89x = 3,882.51 × 945.81
4. Step 4: Simplify right side
   2,587.89x = 3,672,116.78
5. Step 5: Solve for x
   x = 3,672,116.78/2,587.89
6. Step 6: Final answer
   x = 1,418.96