Finding the Fourth Proportional to 1,422.93, 1,962.18 and 974.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.93 : 1,962.18 = 974.33 : x
2. Step 2: Convert to fraction form
   1,422.93/1,962.18 = 974.33/x
3. Step 3: Cross multiply
   1,422.93x = 1,962.18 × 974.33
4. Step 4: Simplify right side
   1,422.93x = 1,911,801.03
5. Step 5: Solve for x
   x = 1,911,801.03/1,422.93
6. Step 6: Final answer
   x = 1,343.57