Finding the Fourth Proportional to 2,180.94, 3,009.56 and 1,296.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.94 : 3,009.56 = 1,296.81 : x
2. Step 2: Convert to fraction form
   2,180.94/3,009.56 = 1,296.81/x
3. Step 3: Cross multiply
   2,180.94x = 3,009.56 × 1,296.81
4. Step 4: Simplify right side
   2,180.94x = 3,902,821.02
5. Step 5: Solve for x
   x = 3,902,821.02/2,180.94
6. Step 6: Final answer
   x = 1,789.51