Finding the Fourth Proportional to 3,111.14, 4,294.24 and 2,118.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.14 : 4,294.24 = 2,118.08 : x
2. Step 2: Convert to fraction form
   3,111.14/4,294.24 = 2,118.08/x
3. Step 3: Cross multiply
   3,111.14x = 4,294.24 × 2,118.08
4. Step 4: Simplify right side
   3,111.14x = 9,095,543.86
5. Step 5: Solve for x
   x = 9,095,543.86/3,111.14
6. Step 6: Final answer
   x = 2,923.54