Finding the Fourth Proportional to 2,402.81, 3,314.98 and 1,615.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.81 : 3,314.98 = 1,615.61 : x
2. Step 2: Convert to fraction form
   2,402.81/3,314.98 = 1,615.61/x
3. Step 3: Cross multiply
   2,402.81x = 3,314.98 × 1,615.61
4. Step 4: Simplify right side
   2,402.81x = 5,355,714.84
5. Step 5: Solve for x
   x = 5,355,714.84/2,402.81
6. Step 6: Final answer
   x = 2,228.94