Finding the Fourth Proportional to 2,188.94, 3,019.98 and 1,403.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.94 : 3,019.98 = 1,403.42 : x
2. Step 2: Convert to fraction form
   2,188.94/3,019.98 = 1,403.42/x
3. Step 3: Cross multiply
   2,188.94x = 3,019.98 × 1,403.42
4. Step 4: Simplify right side
   2,188.94x = 4,238,300.33
5. Step 5: Solve for x
   x = 4,238,300.33/2,188.94
6. Step 6: Final answer
   x = 1,936.23