Finding the Fourth Proportional to 2,666.37, 3,997.52 and 1,787.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666.37 : 3,997.52 = 1,787.48 : x
2. Step 2: Convert to fraction form
   2,666.37/3,997.52 = 1,787.48/x
3. Step 3: Cross multiply
   2,666.37x = 3,997.52 × 1,787.48
4. Step 4: Simplify right side
   2,666.37x = 7,145,487.05
5. Step 5: Solve for x
   x = 7,145,487.05/2,666.37
6. Step 6: Final answer
   x = 2,679.86