Finding the Fourth Proportional to 2,679.88, 3,696.72 and 2,380.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,679.88 : 3,696.72 = 2,380.48 : x
2. Step 2: Convert to fraction form
   2,679.88/3,696.72 = 2,380.48/x
3. Step 3: Cross multiply
   2,679.88x = 3,696.72 × 2,380.48
4. Step 4: Simplify right side
   2,679.88x = 8,799,968.03
5. Step 5: Solve for x
   x = 8,799,968.03/2,679.88
6. Step 6: Final answer
   x = 3,283.72