Finding the Fourth Proportional to 2,357.76, 3,513.24 and 2,099.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,357.76 : 3,513.24 = 2,099.28 : x
2. Step 2: Convert to fraction form
   2,357.76/3,513.24 = 2,099.28/x
3. Step 3: Cross multiply
   2,357.76x = 3,513.24 × 2,099.28
4. Step 4: Simplify right side
   2,357.76x = 7,375,274.47
5. Step 5: Solve for x
   x = 7,375,274.47/2,357.76
6. Step 6: Final answer
   x = 3,128.09