Finding the Fourth Proportional to 1,442.27, 2,159.73 and 1,209.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.27 : 2,159.73 = 1,209.94 : x
2. Step 2: Convert to fraction form
   1,442.27/2,159.73 = 1,209.94/x
3. Step 3: Cross multiply
   1,442.27x = 2,159.73 × 1,209.94
4. Step 4: Simplify right side
   1,442.27x = 2,613,138.32
5. Step 5: Solve for x
   x = 2,613,138.32/1,442.27
6. Step 6: Final answer
   x = 1,811.82