Finding the Fourth Proportional to 1,672.89, 2,308.59 and 974.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.89 : 2,308.59 = 974.27 : x
2. Step 2: Convert to fraction form
   1,672.89/2,308.59 = 974.27/x
3. Step 3: Cross multiply
   1,672.89x = 2,308.59 × 974.27
4. Step 4: Simplify right side
   1,672.89x = 2,249,189.98
5. Step 5: Solve for x
   x = 2,249,189.98/1,672.89
6. Step 6: Final answer
   x = 1,344.49