Finding the Fourth Proportional to 2,884.05, 3,987.77 and 2,515.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,884.05 : 3,987.77 = 2,515.01 : x
2. Step 2: Convert to fraction form
   2,884.05/3,987.77 = 2,515.01/x
3. Step 3: Cross multiply
   2,884.05x = 3,987.77 × 2,515.01
4. Step 4: Simplify right side
   2,884.05x = 10,029,248.91
5. Step 5: Solve for x
   x = 10,029,248.91/2,884.05
6. Step 6: Final answer
   x = 3,477.49