Finding the Fourth Proportional to 1,781.83, 2,673.78 and 808.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,781.83 : 2,673.78 = 808.03 : x
2. Step 2: Convert to fraction form
   1,781.83/2,673.78 = 808.03/x
3. Step 3: Cross multiply
   1,781.83x = 2,673.78 × 808.03
4. Step 4: Simplify right side
   1,781.83x = 2,160,494.45
5. Step 5: Solve for x
   x = 2,160,494.45/1,781.83
6. Step 6: Final answer
   x = 1,212.51