Finding the Fourth Proportional to 2,066.68, 2,851.80 and 1,227.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.68 : 2,851.80 = 1,227.40 : x
2. Step 2: Convert to fraction form
   2,066.68/2,851.80 = 1,227.40/x
3. Step 3: Cross multiply
   2,066.68x = 2,851.80 × 1,227.40
4. Step 4: Simplify right side
   2,066.68x = 3,500,299.32
5. Step 5: Solve for x
   x = 3,500,299.32/2,066.68
6. Step 6: Final answer
   x = 1,693.68