Finding the Fourth Proportional to 1,659.83, 2,290.68 and 1,136.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.83 : 2,290.68 = 1,136.57 : x
2. Step 2: Convert to fraction form
   1,659.83/2,290.68 = 1,136.57/x
3. Step 3: Cross multiply
   1,659.83x = 2,290.68 × 1,136.57
4. Step 4: Simplify right side
   1,659.83x = 2,603,506.71
5. Step 5: Solve for x
   x = 2,603,506.71/1,659.83
6. Step 6: Final answer
   x = 1,568.54