Finding the Fourth Proportional to 1,908.50, 2,864.57 and 984.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,908.50 : 2,864.57 = 984.69 : x
2. Step 2: Convert to fraction form
   1,908.50/2,864.57 = 984.69/x
3. Step 3: Cross multiply
   1,908.50x = 2,864.57 × 984.69
4. Step 4: Simplify right side
   1,908.50x = 2,820,708.51
5. Step 5: Solve for x
   x = 2,820,708.51/1,908.50
6. Step 6: Final answer
   x = 1,477.98