Finding the Fourth Proportional to 2,624.48, 3,936.83 and 980.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,624.48 : 3,936.83 = 980.86 : x
2. Step 2: Convert to fraction form
   2,624.48/3,936.83 = 980.86/x
3. Step 3: Cross multiply
   2,624.48x = 3,936.83 × 980.86
4. Step 4: Simplify right side
   2,624.48x = 3,861,479.07
5. Step 5: Solve for x
   x = 3,861,479.07/2,624.48
6. Step 6: Final answer
   x = 1,471.33