Cost for 2000 Series Activities:
Activity 2001: $150,000.
Activity 2002: $25,000.
Activity 2003: $18,000.
Activity 2004: $96,000.
Total: 150,000+25,000+18,000+96,000=289,000150,000 + 25,000 + 18,000 + 96,000 = 289,000150,000+25,000+18,000+96,000=289,000.
 Total Project Cost:
Total cost: $7,308,000 (sum of all activities in "normal" schedule).
 Percentage Contribution:
289,0007,308,000×100≈3.95%\frac{289,000}{7,308,000} \times 100 \approx 3.95\%7,308,000289,000×100≈3.95%.
 Verification with PSP Guidelines:
The PSP Study Guide emphasizes accuracy in percentage-based cost contributions as a critical analysis tool in project cost management (Ref: PSP Study Guide, Chapter 1B: Cost Breakdown Structure).