Finding the Fourth Proportional to 1,728.50, 2,590.96 and 803.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728.50 : 2,590.96 = 803.82 : x
2. Step 2: Convert to fraction form
   1,728.50/2,590.96 = 803.82/x
3. Step 3: Cross multiply
   1,728.50x = 2,590.96 × 803.82
4. Step 4: Simplify right side
   1,728.50x = 2,082,665.47
5. Step 5: Solve for x
   x = 2,082,665.47/1,728.50
6. Step 6: Final answer
   x = 1,204.90