Finding the Fourth Proportional to 2,113.49, 2,914.89 and 1,615.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.49 : 2,914.89 = 1,615.34 : x
2. Step 2: Convert to fraction form
   2,113.49/2,914.89 = 1,615.34/x
3. Step 3: Cross multiply
   2,113.49x = 2,914.89 × 1,615.34
4. Step 4: Simplify right side
   2,113.49x = 4,708,538.41
5. Step 5: Solve for x
   x = 4,708,538.41/2,113.49
6. Step 6: Final answer
   x = 2,227.85