Finding the Fourth Proportional to 2,011.68, 3,016.98 and 1,038.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.68 : 3,016.98 = 1,038.06 : x
2. Step 2: Convert to fraction form
   2,011.68/3,016.98 = 1,038.06/x
3. Step 3: Cross multiply
   2,011.68x = 3,016.98 × 1,038.06
4. Step 4: Simplify right side
   2,011.68x = 3,131,806.26
5. Step 5: Solve for x
   x = 3,131,806.26/2,011.68
6. Step 6: Final answer
   x = 1,556.81