Finding the Fourth Proportional to 1,659.69, 2,290.82 and 996.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.69 : 2,290.82 = 996.57 : x
2. Step 2: Convert to fraction form
   1,659.69/2,290.82 = 996.57/x
3. Step 3: Cross multiply
   1,659.69x = 2,290.82 × 996.57
4. Step 4: Simplify right side
   1,659.69x = 2,282,957.50
5. Step 5: Solve for x
   x = 2,282,957.50/1,659.69
6. Step 6: Final answer
   x = 1,375.53