Finding the Fourth Proportional to 2,456.06, 3,390.57 and 1,674.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.06 : 3,390.57 = 1,674.20 : x
2. Step 2: Convert to fraction form
   2,456.06/3,390.57 = 1,674.20/x
3. Step 3: Cross multiply
   2,456.06x = 3,390.57 × 1,674.20
4. Step 4: Simplify right side
   2,456.06x = 5,676,500.77
5. Step 5: Solve for x
   x = 5,676,500.77/2,456.06
6. Step 6: Final answer
   x = 2,311.23