Finding the Fourth Proportional to 1,674.12, 2,507.94 and 1,287.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,674.12 : 2,507.94 = 1,287.48 : x
2. Step 2: Convert to fraction form
   1,674.12/2,507.94 = 1,287.48/x
3. Step 3: Cross multiply
   1,674.12x = 2,507.94 × 1,287.48
4. Step 4: Simplify right side
   1,674.12x = 3,228,922.59
5. Step 5: Solve for x
   x = 3,228,922.59/1,674.12
6. Step 6: Final answer
   x = 1,928.73