Finding the Fourth Proportional to 2,624.72, 3,936.64 and 980.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,624.72 : 3,936.64 = 980.83 : x
2. Step 2: Convert to fraction form
   2,624.72/3,936.64 = 980.83/x
3. Step 3: Cross multiply
   2,624.72x = 3,936.64 × 980.83
4. Step 4: Simplify right side
   2,624.72x = 3,861,174.61
5. Step 5: Solve for x
   x = 3,861,174.61/2,624.72
6. Step 6: Final answer
   x = 1,471.08