Finding the Fourth Proportional to 1,682.31, 2,321.55 and 974.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,682.31 : 2,321.55 = 974.10 : x
2. Step 2: Convert to fraction form
   1,682.31/2,321.55 = 974.10/x
3. Step 3: Cross multiply
   1,682.31x = 2,321.55 × 974.10
4. Step 4: Simplify right side
   1,682.31x = 2,261,421.86
5. Step 5: Solve for x
   x = 2,261,421.86/1,682.31
6. Step 6: Final answer
   x = 1,344.24