Finding the Fourth Proportional to 2,479.59, 3,719.62 and 836.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.59 : 3,719.62 = 836.64 : x
2. Step 2: Convert to fraction form
   2,479.59/3,719.62 = 836.64/x
3. Step 3: Cross multiply
   2,479.59x = 3,719.62 × 836.64
4. Step 4: Simplify right side
   2,479.59x = 3,111,982.88
5. Step 5: Solve for x
   x = 3,111,982.88/2,479.59
6. Step 6: Final answer
   x = 1,255.04