Finding the Fourth Proportional to 2,158.26, 2,978.05 and 1,273.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.26 : 2,978.05 = 1,273.94 : x
2. Step 2: Convert to fraction form
   2,158.26/2,978.05 = 1,273.94/x
3. Step 3: Cross multiply
   2,158.26x = 2,978.05 × 1,273.94
4. Step 4: Simplify right side
   2,158.26x = 3,793,857.02
5. Step 5: Solve for x
   x = 3,793,857.02/2,158.26
6. Step 6: Final answer
   x = 1,757.83