Finding the Fourth Proportional to 1,781.58, 2,673.72 and 808.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,781.58 : 2,673.72 = 808.35 : x
2. Step 2: Convert to fraction form
   1,781.58/2,673.72 = 808.35/x
3. Step 3: Cross multiply
   1,781.58x = 2,673.72 × 808.35
4. Step 4: Simplify right side
   1,781.58x = 2,161,301.56
5. Step 5: Solve for x
   x = 2,161,301.56/1,781.58
6. Step 6: Final answer
   x = 1,213.14