Finding the Fourth Proportional to 1,162.27, 1,603.05 and 742.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.27 : 1,603.05 = 742.15 : x
2. Step 2: Convert to fraction form
   1,162.27/1,603.05 = 742.15/x
3. Step 3: Cross multiply
   1,162.27x = 1,603.05 × 742.15
4. Step 4: Simplify right side
   1,162.27x = 1,189,703.56
5. Step 5: Solve for x
   x = 1,189,703.56/1,162.27
6. Step 6: Final answer
   x = 1,023.60