Finding the Fourth Proportional to 2,151.32, 3,220.90 and 1,369.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.32 : 3,220.90 = 1,369.37 : x
2. Step 2: Convert to fraction form
   2,151.32/3,220.90 = 1,369.37/x
3. Step 3: Cross multiply
   2,151.32x = 3,220.90 × 1,369.37
4. Step 4: Simplify right side
   2,151.32x = 4,410,608.46
5. Step 5: Solve for x
   x = 4,410,608.46/2,151.32
6. Step 6: Final answer
   x = 2,050.19