Finding the Fourth Proportional to 1,280.00, 1,765.77 and 801.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,280.00 : 1,765.77 = 801.37 : x
2. Step 2: Convert to fraction form
   1,280.00/1,765.77 = 801.37/x
3. Step 3: Cross multiply
   1,280.00x = 1,765.77 × 801.37
4. Step 4: Simplify right side
   1,280.00x = 1,415,036.10
5. Step 5: Solve for x
   x = 1,415,036.10/1,280.00
6. Step 6: Final answer
   x = 1,105.49