Finding the Fourth Proportional to 2,586.18, 3,881.28 and 944.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,586.18 : 3,881.28 = 944.30 : x
2. Step 2: Convert to fraction form
   2,586.18/3,881.28 = 944.30/x
3. Step 3: Cross multiply
   2,586.18x = 3,881.28 × 944.30
4. Step 4: Simplify right side
   2,586.18x = 3,665,092.70
5. Step 5: Solve for x
   x = 3,665,092.70/2,586.18
6. Step 6: Final answer
   x = 1,417.18