Finding the Fourth Proportional to 1,174.88, 1,620.38 and 801.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.88 : 1,620.38 = 801.47 : x
2. Step 2: Convert to fraction form
   1,174.88/1,620.38 = 801.47/x
3. Step 3: Cross multiply
   1,174.88x = 1,620.38 × 801.47
4. Step 4: Simplify right side
   1,174.88x = 1,298,673.85
5. Step 5: Solve for x
   x = 1,298,673.85/1,174.88
6. Step 6: Final answer
   x = 1,105.37