Finding the Fourth Proportional to 2,268.07, 3,128.02 and 1,915.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,268.07 : 3,128.02 = 1,915.72 : x
2. Step 2: Convert to fraction form
   2,268.07/3,128.02 = 1,915.72/x
3. Step 3: Cross multiply
   2,268.07x = 3,128.02 × 1,915.72
4. Step 4: Simplify right side
   2,268.07x = 5,992,410.47
5. Step 5: Solve for x
   x = 5,992,410.47/2,268.07
6. Step 6: Final answer
   x = 2,642.07