Finding the Fourth Proportional to 2,620.96, 3,618.56 and 1,627.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.96 : 3,618.56 = 1,627.28 : x
2. Step 2: Convert to fraction form
   2,620.96/3,618.56 = 1,627.28/x
3. Step 3: Cross multiply
   2,620.96x = 3,618.56 × 1,627.28
4. Step 4: Simplify right side
   2,620.96x = 5,888,410.32
5. Step 5: Solve for x
   x = 5,888,410.32/2,620.96
6. Step 6: Final answer
   x = 2,246.66