Finding the Fourth Proportional to 1,775.89, 2,663.81 and 801.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,775.89 : 2,663.81 = 801.31 : x
2. Step 2: Convert to fraction form
   1,775.89/2,663.81 = 801.31/x
3. Step 3: Cross multiply
   1,775.89x = 2,663.81 × 801.31
4. Step 4: Simplify right side
   1,775.89x = 2,134,524.27
5. Step 5: Solve for x
   x = 2,134,524.27/1,775.89
6. Step 6: Final answer
   x = 1,201.95