Finding the Fourth Proportional to 2,018.88, 2,787 and 1,355.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.88 : 2,787 = 1,355.46 : x
2. Step 2: Convert to fraction form
   2,018.88/2,787 = 1,355.46/x
3. Step 3: Cross multiply
   2,018.88x = 2,787 × 1,355.46
4. Step 4: Simplify right side
   2,018.88x = 3,777,667.02
5. Step 5: Solve for x
   x = 3,777,667.02/2,018.88
6. Step 6: Final answer
   x = 1,871.17