Finding the Fourth Proportional to 2,647.40, 3,967.00 and 1,003.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.40 : 3,967.00 = 1,003.05 : x
2. Step 2: Convert to fraction form
   2,647.40/3,967.00 = 1,003.05/x
3. Step 3: Cross multiply
   2,647.40x = 3,967.00 × 1,003.05
4. Step 4: Simplify right side
   2,647.40x = 3,979,096.84
5. Step 5: Solve for x
   x = 3,979,096.84/2,647.40
6. Step 6: Final answer
   x = 1,503.02