Finding the Fourth Proportional to 1,162.22, 1,742.78 and 675.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.22 : 1,742.78 = 675.42 : x
2. Step 2: Convert to fraction form
   1,162.22/1,742.78 = 675.42/x
3. Step 3: Cross multiply
   1,162.22x = 1,742.78 × 675.42
4. Step 4: Simplify right side
   1,162.22x = 1,177,108.47
5. Step 5: Solve for x
   x = 1,177,108.47/1,162.22
6. Step 6: Final answer
   x = 1,012.81