Finding the Fourth Proportional to 2,667.80, 3,680.42 and 1,672.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.80 : 3,680.42 = 1,672.40 : x
2. Step 2: Convert to fraction form
   2,667.80/3,680.42 = 1,672.40/x
3. Step 3: Cross multiply
   2,667.80x = 3,680.42 × 1,672.40
4. Step 4: Simplify right side
   2,667.80x = 6,155,134.41
5. Step 5: Solve for x
   x = 6,155,134.41/2,667.80
6. Step 6: Final answer
   x = 2,307.19