Finding the Fourth Proportional to 2,887.62, 3,986.76 and 2,003.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,887.62 : 3,986.76 = 2,003.10 : x
2. Step 2: Convert to fraction form
   2,887.62/3,986.76 = 2,003.10/x
3. Step 3: Cross multiply
   2,887.62x = 3,986.76 × 2,003.10
4. Step 4: Simplify right side
   2,887.62x = 7,985,878.96
5. Step 5: Solve for x
   x = 7,985,878.96/2,887.62
6. Step 6: Final answer
   x = 2,765.56