Finding the Fourth Proportional to 1,673.72, 2,309.37 and 974.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,673.72 : 2,309.37 = 974.69 : x
2. Step 2: Convert to fraction form
   1,673.72/2,309.37 = 974.69/x
3. Step 3: Cross multiply
   1,673.72x = 2,309.37 × 974.69
4. Step 4: Simplify right side
   1,673.72x = 2,250,919.85
5. Step 5: Solve for x
   x = 2,250,919.85/1,673.72
6. Step 6: Final answer
   x = 1,344.86