Finding the Fourth Proportional to 2,615.76, 3,607.74 and 1,621.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.76 : 3,607.74 = 1,621.62 : x
2. Step 2: Convert to fraction form
   2,615.76/3,607.74 = 1,621.62/x
3. Step 3: Cross multiply
   2,615.76x = 3,607.74 × 1,621.62
4. Step 4: Simplify right side
   2,615.76x = 5,850,383.34
5. Step 5: Solve for x
   x = 5,850,383.34/2,615.76
6. Step 6: Final answer
   x = 2,236.59