Finding the Fourth Proportional to 3,086.76, 4,630.17 and 1,212.84

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086.76 : 4,630.17 = 1,212.84 : x
2. Step 2: Convert to fraction form
   3,086.76/4,630.17 = 1,212.84/x
3. Step 3: Cross multiply
   3,086.76x = 4,630.17 × 1,212.84
4. Step 4: Simplify right side
   3,086.76x = 5,615,655.38
5. Step 5: Solve for x
   x = 5,615,655.38/3,086.76
6. Step 6: Final answer
   x = 1,819.27