Finding the Fourth Proportional to 2,443.78, 3,667.47 and 1,520.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.78 : 3,667.47 = 1,520.70 : x
2. Step 2: Convert to fraction form
   2,443.78/3,667.47 = 1,520.70/x
3. Step 3: Cross multiply
   2,443.78x = 3,667.47 × 1,520.70
4. Step 4: Simplify right side
   2,443.78x = 5,577,121.63
5. Step 5: Solve for x
   x = 5,577,121.63/2,443.78
6. Step 6: Final answer
   x = 2,282.17