Finding the Fourth Proportional to 2,084.30, 3,121.05 and 1,648.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.30 : 3,121.05 = 1,648.70 : x
2. Step 2: Convert to fraction form
   2,084.30/3,121.05 = 1,648.70/x
3. Step 3: Cross multiply
   2,084.30x = 3,121.05 × 1,648.70
4. Step 4: Simplify right side
   2,084.30x = 5,145,675.14
5. Step 5: Solve for x
   x = 5,145,675.14/2,084.30
6. Step 6: Final answer
   x = 2,468.78