Finding the Fourth Proportional to 1,627.40, 2,244.18 and 964.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,627.40 : 2,244.18 = 964.28 : x
2. Step 2: Convert to fraction form
   1,627.40/2,244.18 = 964.28/x
3. Step 3: Cross multiply
   1,627.40x = 2,244.18 × 964.28
4. Step 4: Simplify right side
   1,627.40x = 2,164,017.89
5. Step 5: Solve for x
   x = 2,164,017.89/1,627.40
6. Step 6: Final answer
   x = 1,329.74