Finding the Fourth Proportional to 2,388.56, 3,290.76 and 1,788.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.56 : 3,290.76 = 1,788.44 : x
2. Step 2: Convert to fraction form
   2,388.56/3,290.76 = 1,788.44/x
3. Step 3: Cross multiply
   2,388.56x = 3,290.76 × 1,788.44
4. Step 4: Simplify right side
   2,388.56x = 5,885,326.81
5. Step 5: Solve for x
   x = 5,885,326.81/2,388.56
6. Step 6: Final answer
   x = 2,463.96