Finding the Fourth Proportional to 2,111.49, 3,168.63 and 1,138.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.49 : 3,168.63 = 1,138.26 : x
2. Step 2: Convert to fraction form
   2,111.49/3,168.63 = 1,138.26/x
3. Step 3: Cross multiply
   2,111.49x = 3,168.63 × 1,138.26
4. Step 4: Simplify right side
   2,111.49x = 3,606,724.78
5. Step 5: Solve for x
   x = 3,606,724.78/2,111.49
6. Step 6: Final answer
   x = 1,708.14