Finding the Fourth Proportional to 2,749.86, 4,127.54 and 1,290.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,749.86 : 4,127.54 = 1,290.06 : x
2. Step 2: Convert to fraction form
   2,749.86/4,127.54 = 1,290.06/x
3. Step 3: Cross multiply
   2,749.86x = 4,127.54 × 1,290.06
4. Step 4: Simplify right side
   2,749.86x = 5,324,774.25
5. Step 5: Solve for x
   x = 5,324,774.25/2,749.86
6. Step 6: Final answer
   x = 1,936.38