Finding the Fourth Proportional to 2,788.18, 4,164.61 and 2,628.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788.18 : 4,164.61 = 2,628.24 : x
2. Step 2: Convert to fraction form
   2,788.18/4,164.61 = 2,628.24/x
3. Step 3: Cross multiply
   2,788.18x = 4,164.61 × 2,628.24
4. Step 4: Simplify right side
   2,788.18x = 10,945,594.59
5. Step 5: Solve for x
   x = 10,945,594.59/2,788.18
6. Step 6: Final answer
   x = 3,925.71