Finding the Fourth Proportional to 1,787.81, 2,668.57 and 1,662.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,787.81 : 2,668.57 = 1,662.47 : x
2. Step 2: Convert to fraction form
   1,787.81/2,668.57 = 1,662.47/x
3. Step 3: Cross multiply
   1,787.81x = 2,668.57 × 1,662.47
4. Step 4: Simplify right side
   1,787.81x = 4,436,411.31
5. Step 5: Solve for x
   x = 4,436,411.31/1,787.81
6. Step 6: Final answer
   x = 2,481.47