Finding the Fourth Proportional to 3,825.29, 5,279.15 and 2,146.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,825.29 : 5,279.15 = 2,146.80 : x
2. Step 2: Convert to fraction form
   3,825.29/5,279.15 = 2,146.80/x
3. Step 3: Cross multiply
   3,825.29x = 5,279.15 × 2,146.80
4. Step 4: Simplify right side
   3,825.29x = 11,333,279.22
5. Step 5: Solve for x
   x = 11,333,279.22/3,825.29
6. Step 6: Final answer
   x = 2,962.72