Finding the Fourth Proportional to 2,480.74, 3,718.50 and 836.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,480.74 : 3,718.50 = 836.71 : x
2. Step 2: Convert to fraction form
   2,480.74/3,718.50 = 836.71/x
3. Step 3: Cross multiply
   2,480.74x = 3,718.50 × 836.71
4. Step 4: Simplify right side
   2,480.74x = 3,111,306.14
5. Step 5: Solve for x
   x = 3,111,306.14/2,480.74
6. Step 6: Final answer
   x = 1,254.18