Finding the Fourth Proportional to 1,356.22, 1,872.04 and 964.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.22 : 1,872.04 = 964.38 : x
2. Step 2: Convert to fraction form
   1,356.22/1,872.04 = 964.38/x
3. Step 3: Cross multiply
   1,356.22x = 1,872.04 × 964.38
4. Step 4: Simplify right side
   1,356.22x = 1,805,357.94
5. Step 5: Solve for x
   x = 1,805,357.94/1,356.22
6. Step 6: Final answer
   x = 1,331.17