Finding the Fourth Proportional to 3,665.94, 5,058.99 and 1,987.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.94 : 5,058.99 = 1,987.35 : x
2. Step 2: Convert to fraction form
   3,665.94/5,058.99 = 1,987.35/x
3. Step 3: Cross multiply
   3,665.94x = 5,058.99 × 1,987.35
4. Step 4: Simplify right side
   3,665.94x = 10,053,983.78
5. Step 5: Solve for x
   x = 10,053,983.78/3,665.94
6. Step 6: Final answer
   x = 2,742.54