Finding the Fourth Proportional to 1,647.74, 2,472.51 and 674.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.74 : 2,472.51 = 674.52 : x
2. Step 2: Convert to fraction form
   1,647.74/2,472.51 = 674.52/x
3. Step 3: Cross multiply
   1,647.74x = 2,472.51 × 674.52
4. Step 4: Simplify right side
   1,647.74x = 1,667,757.45
5. Step 5: Solve for x
   x = 1,667,757.45/1,647.74
6. Step 6: Final answer
   x = 1,012.15