Finding the Fourth Proportional to 2,289.76, 3,152.22 and 2,185.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.76 : 3,152.22 = 2,185.28 : x
2. Step 2: Convert to fraction form
   2,289.76/3,152.22 = 2,185.28/x
3. Step 3: Cross multiply
   2,289.76x = 3,152.22 × 2,185.28
4. Step 4: Simplify right side
   2,289.76x = 6,888,483.32
5. Step 5: Solve for x
   x = 6,888,483.32/2,289.76
6. Step 6: Final answer
   x = 3,008.39