Finding the Fourth Proportional to 2,188.28, 3,017.37 and 1,788.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.28 : 3,017.37 = 1,788.70 : x
2. Step 2: Convert to fraction form
   2,188.28/3,017.37 = 1,788.70/x
3. Step 3: Cross multiply
   2,188.28x = 3,017.37 × 1,788.70
4. Step 4: Simplify right side
   2,188.28x = 5,397,169.72
5. Step 5: Solve for x
   x = 5,397,169.72/2,188.28
6. Step 6: Final answer
   x = 2,466.40