Finding the Fourth Proportional to 1,442.34, 2,162.74 and 747.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.34 : 2,162.74 = 747.29 : x
2. Step 2: Convert to fraction form
   1,442.34/2,162.74 = 747.29/x
3. Step 3: Cross multiply
   1,442.34x = 2,162.74 × 747.29
4. Step 4: Simplify right side
   1,442.34x = 1,616,191.89
5. Step 5: Solve for x
   x = 1,616,191.89/1,442.34
6. Step 6: Final answer
   x = 1,120.53