Finding the Fourth Proportional to 2,217.58, 3,061.36 and 1,513.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.58 : 3,061.36 = 1,513.09 : x
2. Step 2: Convert to fraction form
   2,217.58/3,061.36 = 1,513.09/x
3. Step 3: Cross multiply
   2,217.58x = 3,061.36 × 1,513.09
4. Step 4: Simplify right side
   2,217.58x = 4,632,113.20
5. Step 5: Solve for x
   x = 4,632,113.20/2,217.58
6. Step 6: Final answer
   x = 2,088.81