Finding the Fourth Proportional to 3,667.23, 5,478.57 and 2,340.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.23 : 5,478.57 = 2,340.45 : x
2. Step 2: Convert to fraction form
   3,667.23/5,478.57 = 2,340.45/x
3. Step 3: Cross multiply
   3,667.23x = 5,478.57 × 2,340.45
4. Step 4: Simplify right side
   3,667.23x = 12,822,319.16
5. Step 5: Solve for x
   x = 12,822,319.16/3,667.23
6. Step 6: Final answer
   x = 3,496.46