Finding the Fourth Proportional to 3,111.49, 4,293.89 and 1,695.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.49 : 4,293.89 = 1,695.21 : x
2. Step 2: Convert to fraction form
   3,111.49/4,293.89 = 1,695.21/x
3. Step 3: Cross multiply
   3,111.49x = 4,293.89 × 1,695.21
4. Step 4: Simplify right side
   3,111.49x = 7,279,045.27
5. Step 5: Solve for x
   x = 7,279,045.27/3,111.49
6. Step 6: Final answer
   x = 2,339.41