Finding the Fourth Proportional to 1,673.23, 2,506.61 and 808.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,673.23 : 2,506.61 = 808.15 : x
2. Step 2: Convert to fraction form
   1,673.23/2,506.61 = 808.15/x
3. Step 3: Cross multiply
   1,673.23x = 2,506.61 × 808.15
4. Step 4: Simplify right side
   1,673.23x = 2,025,712.83
5. Step 5: Solve for x
   x = 2,025,712.83/1,673.23
6. Step 6: Final answer
   x = 1,210.66