Finding the Fourth Proportional to 1,481.05, 2,043.86 and 817.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,481.05 : 2,043.86 = 817.89 : x
2. Step 2: Convert to fraction form
   1,481.05/2,043.86 = 817.89/x
3. Step 3: Cross multiply
   1,481.05x = 2,043.86 × 817.89
4. Step 4: Simplify right side
   1,481.05x = 1,671,652.66
5. Step 5: Solve for x
   x = 1,671,652.66/1,481.05
6. Step 6: Final answer
   x = 1,128.69