Finding the Fourth Proportional to 2,127.89, 3,189.81 and 893.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,127.89 : 3,189.81 = 893.86 : x
2. Step 2: Convert to fraction form
   2,127.89/3,189.81 = 893.86/x
3. Step 3: Cross multiply
   2,127.89x = 3,189.81 × 893.86
4. Step 4: Simplify right side
   2,127.89x = 2,851,243.57
5. Step 5: Solve for x
   x = 2,851,243.57/2,127.89
6. Step 6: Final answer
   x = 1,339.94