Finding the Fourth Proportional to 2,019.93, 2,787.56 and 1,135.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.93 : 2,787.56 = 1,135.81 : x
2. Step 2: Convert to fraction form
   2,019.93/2,787.56 = 1,135.81/x
3. Step 3: Cross multiply
   2,019.93x = 2,787.56 × 1,135.81
4. Step 4: Simplify right side
   2,019.93x = 3,166,138.52
5. Step 5: Solve for x
   x = 3,166,138.52/2,019.93
6. Step 6: Final answer
   x = 1,567.45