Finding the Fourth Proportional to 2,112.57, 2,914.81 and 1,273.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.57 : 2,914.81 = 1,273.09 : x
2. Step 2: Convert to fraction form
   2,112.57/2,914.81 = 1,273.09/x
3. Step 3: Cross multiply
   2,112.57x = 2,914.81 × 1,273.09
4. Step 4: Simplify right side
   2,112.57x = 3,710,815.46
5. Step 5: Solve for x
   x = 3,710,815.46/2,112.57
6. Step 6: Final answer
   x = 1,756.54