Finding the Fourth Proportional to 2,120.73, 2,926.05 and 1,322.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120.73 : 2,926.05 = 1,322.81 : x
2. Step 2: Convert to fraction form
   2,120.73/2,926.05 = 1,322.81/x
3. Step 3: Cross multiply
   2,120.73x = 2,926.05 × 1,322.81
4. Step 4: Simplify right side
   2,120.73x = 3,870,593.57
5. Step 5: Solve for x
   x = 3,870,593.57/2,120.73
6. Step 6: Final answer
   x = 1,825.12