Finding the Fourth Proportional to 2,648.13, 3,967.02 and 1,415.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.13 : 3,967.02 = 1,415.10 : x
2. Step 2: Convert to fraction form
   2,648.13/3,967.02 = 1,415.10/x
3. Step 3: Cross multiply
   2,648.13x = 3,967.02 × 1,415.10
4. Step 4: Simplify right side
   2,648.13x = 5,613,730.00
5. Step 5: Solve for x
   x = 5,613,730.00/2,648.13
6. Step 6: Final answer
   x = 2,119.88