Finding the Fourth Proportional to 1,206.42, 1,664.50 and 675.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,206.42 : 1,664.50 = 675.25 : x
2. Step 2: Convert to fraction form
   1,206.42/1,664.50 = 675.25/x
3. Step 3: Cross multiply
   1,206.42x = 1,664.50 × 675.25
4. Step 4: Simplify right side
   1,206.42x = 1,123,958.40
5. Step 5: Solve for x
   x = 1,123,958.40/1,206.42
6. Step 6: Final answer
   x = 931.65