Finding the Fourth Proportional to 2,019.35, 2,787.68 and 1,355.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.35 : 2,787.68 = 1,355.96 : x
2. Step 2: Convert to fraction form
   2,019.35/2,787.68 = 1,355.96/x
3. Step 3: Cross multiply
   2,019.35x = 2,787.68 × 1,355.96
4. Step 4: Simplify right side
   2,019.35x = 3,779,982.57
5. Step 5: Solve for x
   x = 3,779,982.57/2,019.35
6. Step 6: Final answer
   x = 1,871.88