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:

289,0007,308,0001003.95%frac{289,000}{7,308,000} times 100 approx 3.95%7,308,000289,0001003.95%.

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).