Finding the Fourth Proportional to 2,231.69, 3,349.60 and 1,136.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.69 : 3,349.60 = 1,136.87 : x
2. Step 2: Convert to fraction form
   2,231.69/3,349.60 = 1,136.87/x
3. Step 3: Cross multiply
   2,231.69x = 3,349.60 × 1,136.87
4. Step 4: Simplify right side
   2,231.69x = 3,808,052.72
5. Step 5: Solve for x
   x = 3,808,052.72/2,231.69
6. Step 6: Final answer
   x = 1,706.36