Finding the Fourth Proportional to 2,188.70, 3,019.85 and 1,337.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.70 : 3,019.85 = 1,337.73 : x
2. Step 2: Convert to fraction form
   2,188.70/3,019.85 = 1,337.73/x
3. Step 3: Cross multiply
   2,188.70x = 3,019.85 × 1,337.73
4. Step 4: Simplify right side
   2,188.70x = 4,039,747.28
5. Step 5: Solve for x
   x = 4,039,747.28/2,188.70
6. Step 6: Final answer
   x = 1,845.73