Finding the Fourth Proportional to 1,421.82, 1,963.35 and 957.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.82 : 1,963.35 = 957.42 : x
2. Step 2: Convert to fraction form
   1,421.82/1,963.35 = 957.42/x
3. Step 3: Cross multiply
   1,421.82x = 1,963.35 × 957.42
4. Step 4: Simplify right side
   1,421.82x = 1,879,750.56
5. Step 5: Solve for x
   x = 1,879,750.56/1,421.82
6. Step 6: Final answer
   x = 1,322.07