Finding the Fourth Proportional to 1,173.42, 1,619.37 and 801.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.42 : 1,619.37 = 801.18 : x
2. Step 2: Convert to fraction form
   1,173.42/1,619.37 = 801.18/x
3. Step 3: Cross multiply
   1,173.42x = 1,619.37 × 801.18
4. Step 4: Simplify right side
   1,173.42x = 1,297,406.86
5. Step 5: Solve for x
   x = 1,297,406.86/1,173.42
6. Step 6: Final answer
   x = 1,105.66