Finding the Fourth Proportional to 1,342.81, 1,854.64 and 1,074.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.81 : 1,854.64 = 1,074.56 : x
2. Step 2: Convert to fraction form
   1,342.81/1,854.64 = 1,074.56/x
3. Step 3: Cross multiply
   1,342.81x = 1,854.64 × 1,074.56
4. Step 4: Simplify right side
   1,342.81x = 1,992,912.69
5. Step 5: Solve for x
   x = 1,992,912.69/1,342.81
6. Step 6: Final answer
   x = 1,484.14