Finding the Fourth Proportional to 2,318.77, 3,479.01 and 1,086.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,318.77 : 3,479.01 = 1,086.58 : x
2. Step 2: Convert to fraction form
   2,318.77/3,479.01 = 1,086.58/x
3. Step 3: Cross multiply
   2,318.77x = 3,479.01 × 1,086.58
4. Step 4: Simplify right side
   2,318.77x = 3,780,222.69
5. Step 5: Solve for x
   x = 3,780,222.69/2,318.77
6. Step 6: Final answer
   x = 1,630.27