Finding the Fourth Proportional to 1,684.33, 2,527.57 and 818.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,684.33 : 2,527.57 = 818.17 : x
2. Step 2: Convert to fraction form
   1,684.33/2,527.57 = 818.17/x
3. Step 3: Cross multiply
   1,684.33x = 2,527.57 × 818.17
4. Step 4: Simplify right side
   1,684.33x = 2,067,976.65
5. Step 5: Solve for x
   x = 2,067,976.65/1,684.33
6. Step 6: Final answer
   x = 1,227.78