Finding the Fourth Proportional to 2,111.67, 3,168.90 and 942.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.67 : 3,168.90 = 942.30 : x
2. Step 2: Convert to fraction form
   2,111.67/3,168.90 = 942.30/x
3. Step 3: Cross multiply
   2,111.67x = 3,168.90 × 942.30
4. Step 4: Simplify right side
   2,111.67x = 2,986,054.47
5. Step 5: Solve for x
   x = 2,986,054.47/2,111.67
6. Step 6: Final answer
   x = 1,414.07