Finding the Fourth Proportional to 2,162.93, 2,984.72 and 1,278.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.93 : 2,984.72 = 1,278.81 : x
2. Step 2: Convert to fraction form
   2,162.93/2,984.72 = 1,278.81/x
3. Step 3: Cross multiply
   2,162.93x = 2,984.72 × 1,278.81
4. Step 4: Simplify right side
   2,162.93x = 3,816,883.39
5. Step 5: Solve for x
   x = 3,816,883.39/2,162.93
6. Step 6: Final answer
   x = 1,764.69