Finding the Fourth Proportional to 3,667.68, 5,500.56 and 1,587.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.68 : 5,500.56 = 1,587.60 : x
2. Step 2: Convert to fraction form
   3,667.68/5,500.56 = 1,587.60/x
3. Step 3: Cross multiply
   3,667.68x = 5,500.56 × 1,587.60
4. Step 4: Simplify right side
   3,667.68x = 8,732,689.06
5. Step 5: Solve for x
   x = 8,732,689.06/3,667.68
6. Step 6: Final answer
   x = 2,380.98