Finding the Fourth Proportional to 2,444.78, 3,667.58 and 1,212.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,444.78 : 3,667.58 = 1,212.23 : x
2. Step 2: Convert to fraction form
   2,444.78/3,667.58 = 1,212.23/x
3. Step 3: Cross multiply
   2,444.78x = 3,667.58 × 1,212.23
4. Step 4: Simplify right side
   2,444.78x = 4,445,958.16
5. Step 5: Solve for x
   x = 4,445,958.16/2,444.78
6. Step 6: Final answer
   x = 1,818.55