Finding the Fourth Proportional to 3,608.25, 4,978.53 and 2,191.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,608.25 : 4,978.53 = 2,191.89 : x
2. Step 2: Convert to fraction form
   3,608.25/4,978.53 = 2,191.89/x
3. Step 3: Cross multiply
   3,608.25x = 4,978.53 × 2,191.89
4. Step 4: Simplify right side
   3,608.25x = 10,912,390.12
5. Step 5: Solve for x
   x = 10,912,390.12/3,608.25
6. Step 6: Final answer
   x = 3,024.29