Finding the Fourth Proportional to 2,715.72, 4,074.18 and 984.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.72 : 4,074.18 = 984.30 : x
2. Step 2: Convert to fraction form
   2,715.72/4,074.18 = 984.30/x
3. Step 3: Cross multiply
   2,715.72x = 4,074.18 × 984.30
4. Step 4: Simplify right side
   2,715.72x = 4,010,215.37
5. Step 5: Solve for x
   x = 4,010,215.37/2,715.72
6. Step 6: Final answer
   x = 1,476.67