Finding the Fourth Proportional to 1,627.52, 2,245.86 and 964.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,627.52 : 2,245.86 = 964.31 : x
2. Step 2: Convert to fraction form
   1,627.52/2,245.86 = 964.31/x
3. Step 3: Cross multiply
   1,627.52x = 2,245.86 × 964.31
4. Step 4: Simplify right side
   1,627.52x = 2,165,694.03
5. Step 5: Solve for x
   x = 2,165,694.03/1,627.52
6. Step 6: Final answer
   x = 1,330.68