Finding the Fourth Proportional to 2,754.93, 4,128.89 and 1,290.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,754.93 : 4,128.89 = 1,290.86 : x
2. Step 2: Convert to fraction form
   2,754.93/4,128.89 = 1,290.86/x
3. Step 3: Cross multiply
   2,754.93x = 4,128.89 × 1,290.86
4. Step 4: Simplify right side
   2,754.93x = 5,329,791.85
5. Step 5: Solve for x
   x = 5,329,791.85/2,754.93
6. Step 6: Final answer
   x = 1,934.64