Finding the Fourth Proportional to 1,131.84, 1,561.80 and 659.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.84 : 1,561.80 = 659.67 : x
2. Step 2: Convert to fraction form
   1,131.84/1,561.80 = 659.67/x
3. Step 3: Cross multiply
   1,131.84x = 1,561.80 × 659.67
4. Step 4: Simplify right side
   1,131.84x = 1,030,272.61
5. Step 5: Solve for x
   x = 1,030,272.61/1,131.84
6. Step 6: Final answer
   x = 910.26