Finding the Fourth Proportional to 1,821.57, 2,514.71 and 1,227.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821.57 : 2,514.71 = 1,227.18 : x
2. Step 2: Convert to fraction form
   1,821.57/2,514.71 = 1,227.18/x
3. Step 3: Cross multiply
   1,821.57x = 2,514.71 × 1,227.18
4. Step 4: Simplify right side
   1,821.57x = 3,086,001.82
5. Step 5: Solve for x
   x = 3,086,001.82/1,821.57
6. Step 6: Final answer
   x = 1,694.14