Finding the Fourth Proportional to 1,682.46, 2,321.76 and 974.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,682.46 : 2,321.76 = 974.29 : x
2. Step 2: Convert to fraction form
   1,682.46/2,321.76 = 974.29/x
3. Step 3: Cross multiply
   1,682.46x = 2,321.76 × 974.29
4. Step 4: Simplify right side
   1,682.46x = 2,262,067.55
5. Step 5: Solve for x
   x = 2,262,067.55/1,682.46
6. Step 6: Final answer
   x = 1,344.50