Finding the Fourth Proportional to 2,667.48, 3,993.70 and 1,415.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.48 : 3,993.70 = 1,415.22 : x
2. Step 2: Convert to fraction form
   2,667.48/3,993.70 = 1,415.22/x
3. Step 3: Cross multiply
   2,667.48x = 3,993.70 × 1,415.22
4. Step 4: Simplify right side
   2,667.48x = 5,651,964.11
5. Step 5: Solve for x
   x = 5,651,964.11/2,667.48
6. Step 6: Final answer
   x = 2,118.84