Finding the Fourth Proportional to 2,556.30, 3,833.61 and 801.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.30 : 3,833.61 = 801.30 : x
2. Step 2: Convert to fraction form
   2,556.30/3,833.61 = 801.30/x
3. Step 3: Cross multiply
   2,556.30x = 3,833.61 × 801.30
4. Step 4: Simplify right side
   2,556.30x = 3,071,871.69
5. Step 5: Solve for x
   x = 3,071,871.69/2,556.30
6. Step 6: Final answer
   x = 1,201.69