Finding the Fourth Proportional to 2,665.88, 3,679.20 and 1,487.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.88 : 3,679.20 = 1,487.36 : x
2. Step 2: Convert to fraction form
   2,665.88/3,679.20 = 1,487.36/x
3. Step 3: Cross multiply
   2,665.88x = 3,679.20 × 1,487.36
4. Step 4: Simplify right side
   2,665.88x = 5,472,294.91
5. Step 5: Solve for x
   x = 5,472,294.91/2,665.88
6. Step 6: Final answer
   x = 2,052.72