Finding the Fourth Proportional to 1,298.00, 1,791.57 and 801.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298.00 : 1,791.57 = 801.05 : x
2. Step 2: Convert to fraction form
   1,298.00/1,791.57 = 801.05/x
3. Step 3: Cross multiply
   1,298.00x = 1,791.57 × 801.05
4. Step 4: Simplify right side
   1,298.00x = 1,435,141.63
5. Step 5: Solve for x
   x = 1,435,141.63/1,298.00
6. Step 6: Final answer
   x = 1,105.65