Finding the Fourth Proportional to 2,458.88, 3,685.28 and 2,109.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,458.88 : 3,685.28 = 2,109.76 : x
2. Step 2: Convert to fraction form
   2,458.88/3,685.28 = 2,109.76/x
3. Step 3: Cross multiply
   2,458.88x = 3,685.28 × 2,109.76
4. Step 4: Simplify right side
   2,458.88x = 7,775,056.33
5. Step 5: Solve for x
   x = 7,775,056.33/2,458.88
6. Step 6: Final answer
   x = 3,162.03