Finding the Fourth Proportional to 1,298.60, 1,791.99 and 801.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298.60 : 1,791.99 = 801.27 : x
2. Step 2: Convert to fraction form
   1,298.60/1,791.99 = 801.27/x
3. Step 3: Cross multiply
   1,298.60x = 1,791.99 × 801.27
4. Step 4: Simplify right side
   1,298.60x = 1,435,867.83
5. Step 5: Solve for x
   x = 1,435,867.83/1,298.60
6. Step 6: Final answer
   x = 1,105.71