Finding the Fourth Proportional to 1,356.57, 1,872.45 and 963.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.57 : 1,872.45 = 963.72 : x
2. Step 2: Convert to fraction form
   1,356.57/1,872.45 = 963.72/x
3. Step 3: Cross multiply
   1,356.57x = 1,872.45 × 963.72
4. Step 4: Simplify right side
   1,356.57x = 1,804,517.51
5. Step 5: Solve for x
   x = 1,804,517.51/1,356.57
6. Step 6: Final answer
   x = 1,330.21