Finding the Fourth Proportional to 2,100.03, 3,147.81 and 1,112.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.03 : 3,147.81 = 1,112.23 : x
2. Step 2: Convert to fraction form
   2,100.03/3,147.81 = 1,112.23/x
3. Step 3: Cross multiply
   2,100.03x = 3,147.81 × 1,112.23
4. Step 4: Simplify right side
   2,100.03x = 3,501,086.09
5. Step 5: Solve for x
   x = 3,501,086.09/2,100.03
6. Step 6: Final answer
   x = 1,667.16