Finding the Fourth Proportional to 2,181.39, 3,009.78 and 1,342.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.39 : 3,009.78 = 1,342.23 : x
2. Step 2: Convert to fraction form
   2,181.39/3,009.78 = 1,342.23/x
3. Step 3: Cross multiply
   2,181.39x = 3,009.78 × 1,342.23
4. Step 4: Simplify right side
   2,181.39x = 4,039,817.01
5. Step 5: Solve for x
   x = 4,039,817.01/2,181.39
6. Step 6: Final answer
   x = 1,851.95