Finding the Fourth Proportional to 2,141.57, 3,209.88 and 984.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.57 : 3,209.88 = 984.89 : x
2. Step 2: Convert to fraction form
   2,141.57/3,209.88 = 984.89/x
3. Step 3: Cross multiply
   2,141.57x = 3,209.88 × 984.89
4. Step 4: Simplify right side
   2,141.57x = 3,161,378.71
5. Step 5: Solve for x
   x = 3,161,378.71/2,141.57
6. Step 6: Final answer
   x = 1,476.20