Finding the Fourth Proportional to 3,111.39, 4,644.32 and 2,742.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.39 : 4,644.32 = 2,742.35 : x
2. Step 2: Convert to fraction form
   3,111.39/4,644.32 = 2,742.35/x
3. Step 3: Cross multiply
   3,111.39x = 4,644.32 × 2,742.35
4. Step 4: Simplify right side
   3,111.39x = 12,736,314.02
5. Step 5: Solve for x
   x = 12,736,314.02/3,111.39
6. Step 6: Final answer
   x = 4,093.45