Finding the Fourth Proportional to 1,131.81, 1,562.04 and 659.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.81 : 1,562.04 = 659.73 : x
2. Step 2: Convert to fraction form
   1,131.81/1,562.04 = 659.73/x
3. Step 3: Cross multiply
   1,131.81x = 1,562.04 × 659.73
4. Step 4: Simplify right side
   1,131.81x = 1,030,515.19
5. Step 5: Solve for x
   x = 1,030,515.19/1,131.81
6. Step 6: Final answer
   x = 910.50