Finding the Fourth Proportional to 1,813.97, 2,501.86 and 1,216.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,813.97 : 2,501.86 = 1,216.27 : x
2. Step 2: Convert to fraction form
   1,813.97/2,501.86 = 1,216.27/x
3. Step 3: Cross multiply
   1,813.97x = 2,501.86 × 1,216.27
4. Step 4: Simplify right side
   1,813.97x = 3,042,924.75
5. Step 5: Solve for x
   x = 3,042,924.75/1,813.97
6. Step 6: Final answer
   x = 1,677.49