Finding the Fourth Proportional to 1,816.97, 2,506.56 and 1,227.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,816.97 : 2,506.56 = 1,227.71 : x
2. Step 2: Convert to fraction form
   1,816.97/2,506.56 = 1,227.71/x
3. Step 3: Cross multiply
   1,816.97x = 2,506.56 × 1,227.71
4. Step 4: Simplify right side
   1,816.97x = 3,077,328.78
5. Step 5: Solve for x
   x = 3,077,328.78/1,816.97
6. Step 6: Final answer
   x = 1,693.66