Finding the Fourth Proportional to 1,590.27, 2,383.25 and 722.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,590.27 : 2,383.25 = 722.55 : x
2. Step 2: Convert to fraction form
   1,590.27/2,383.25 = 722.55/x
3. Step 3: Cross multiply
   1,590.27x = 2,383.25 × 722.55
4. Step 4: Simplify right side
   1,590.27x = 1,722,013.67
5. Step 5: Solve for x
   x = 1,722,013.67/1,590.27
6. Step 6: Final answer
   x = 1,082.84