Finding the Fourth Proportional to 1,647.35, 2,471.49 and 674.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.35 : 2,471.49 = 674.15 : x
2. Step 2: Convert to fraction form
   1,647.35/2,471.49 = 674.15/x
3. Step 3: Cross multiply
   1,647.35x = 2,471.49 × 674.15
4. Step 4: Simplify right side
   1,647.35x = 1,666,154.98
5. Step 5: Solve for x
   x = 1,666,154.98/1,647.35
6. Step 6: Final answer
   x = 1,011.42