Finding the Fourth Proportional to 2,485.43, 3,724.64 and 1,788.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.43 : 3,724.64 = 1,788.81 : x
2. Step 2: Convert to fraction form
   2,485.43/3,724.64 = 1,788.81/x
3. Step 3: Cross multiply
   2,485.43x = 3,724.64 × 1,788.81
4. Step 4: Simplify right side
   2,485.43x = 6,662,664.33
5. Step 5: Solve for x
   x = 6,662,664.33/2,485.43
6. Step 6: Final answer
   x = 2,680.69