Finding the Fourth Proportional to 2,111.03, 2,897.19 and 1,987.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.03 : 2,897.19 = 1,987.37 : x
2. Step 2: Convert to fraction form
   2,111.03/2,897.19 = 1,987.37/x
3. Step 3: Cross multiply
   2,111.03x = 2,897.19 × 1,987.37
4. Step 4: Simplify right side
   2,111.03x = 5,757,793.46
5. Step 5: Solve for x
   x = 5,757,793.46/2,111.03
6. Step 6: Final answer
   x = 2,727.48