Finding the Fourth Proportional to 1,591.81, 2,387.25 and 667.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.81 : 2,387.25 = 667.34 : x
2. Step 2: Convert to fraction form
   1,591.81/2,387.25 = 667.34/x
3. Step 3: Cross multiply
   1,591.81x = 2,387.25 × 667.34
4. Step 4: Simplify right side
   1,591.81x = 1,593,107.42
5. Step 5: Solve for x
   x = 1,593,107.42/1,591.81
6. Step 6: Final answer
   x = 1,000.82