Finding the Fourth Proportional to 2,402.82, 3,318.62 and 1,615.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.82 : 3,318.62 = 1,615.50 : x
2. Step 2: Convert to fraction form
   2,402.82/3,318.62 = 1,615.50/x
3. Step 3: Cross multiply
   2,402.82x = 3,318.62 × 1,615.50
4. Step 4: Simplify right side
   2,402.82x = 5,361,230.61
5. Step 5: Solve for x
   x = 5,361,230.61/2,402.82
6. Step 6: Final answer
   x = 2,231.22