Finding the Fourth Proportional to 2,110.56, 3,162.60 and 1,242.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,110.56 : 3,162.60 = 1,242.78 : x
2. Step 2: Convert to fraction form
   2,110.56/3,162.60 = 1,242.78/x
3. Step 3: Cross multiply
   2,110.56x = 3,162.60 × 1,242.78
4. Step 4: Simplify right side
   2,110.56x = 3,930,416.03
5. Step 5: Solve for x
   x = 3,930,416.03/2,110.56
6. Step 6: Final answer
   x = 1,862.26