Finding the Fourth Proportional to 2,111.93, 2,912.37 and 1,366.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.93 : 2,912.37 = 1,366.28 : x
2. Step 2: Convert to fraction form
   2,111.93/2,912.37 = 1,366.28/x
3. Step 3: Cross multiply
   2,111.93x = 2,912.37 × 1,366.28
4. Step 4: Simplify right side
   2,111.93x = 3,979,112.88
5. Step 5: Solve for x
   x = 3,979,112.88/2,111.93
6. Step 6: Final answer
   x = 1,884.11