Finding the Fourth Proportional to 2,589.49, 3,883.28 and 945.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589.49 : 3,883.28 = 945.55 : x
2. Step 2: Convert to fraction form
   2,589.49/3,883.28 = 945.55/x
3. Step 3: Cross multiply
   2,589.49x = 3,883.28 × 945.55
4. Step 4: Simplify right side
   2,589.49x = 3,671,835.40
5. Step 5: Solve for x
   x = 3,671,835.40/2,589.49
6. Step 6: Final answer
   x = 1,417.98