Finding the Fourth Proportional to 2,238.16, 3,353.72 and 1,889.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.16 : 3,353.72 = 1,889.86 : x
2. Step 2: Convert to fraction form
   2,238.16/3,353.72 = 1,889.86/x
3. Step 3: Cross multiply
   2,238.16x = 3,353.72 × 1,889.86
4. Step 4: Simplify right side
   2,238.16x = 6,338,061.28
5. Step 5: Solve for x
   x = 6,338,061.28/2,238.16
6. Step 6: Final answer
   x = 2,831.82