Finding the Fourth Proportional to 1,627.24, 2,245.89 and 964.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,627.24 : 2,245.89 = 964.45 : x
2. Step 2: Convert to fraction form
   1,627.24/2,245.89 = 964.45/x
3. Step 3: Cross multiply
   1,627.24x = 2,245.89 × 964.45
4. Step 4: Simplify right side
   1,627.24x = 2,166,048.61
5. Step 5: Solve for x
   x = 2,166,048.61/1,627.24
6. Step 6: Final answer
   x = 1,331.12