Finding the Fourth Proportional to 2,147.69, 3,222.08 and 742.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.69 : 3,222.08 = 742.25 : x
2. Step 2: Convert to fraction form
   2,147.69/3,222.08 = 742.25/x
3. Step 3: Cross multiply
   2,147.69x = 3,222.08 × 742.25
4. Step 4: Simplify right side
   2,147.69x = 2,391,585.17
5. Step 5: Solve for x
   x = 2,391,585.17/2,147.69
6. Step 6: Final answer
   x = 1,113.56