Finding the Fourth Proportional to 1,422.50, 1,963.59 and 957.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.50 : 1,963.59 = 957.02 : x
2. Step 2: Convert to fraction form
   1,422.50/1,963.59 = 957.02/x
3. Step 3: Cross multiply
   1,422.50x = 1,963.59 × 957.02
4. Step 4: Simplify right side
   1,422.50x = 1,879,194.90
5. Step 5: Solve for x
   x = 1,879,194.90/1,422.50
6. Step 6: Final answer
   x = 1,321.05