Finding the Fourth Proportional to 1,204.58, 1,806.59 and 554.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,204.58 : 1,806.59 = 554.69 : x
2. Step 2: Convert to fraction form
   1,204.58/1,806.59 = 554.69/x
3. Step 3: Cross multiply
   1,204.58x = 1,806.59 × 554.69
4. Step 4: Simplify right side
   1,204.58x = 1,002,085.60
5. Step 5: Solve for x
   x = 1,002,085.60/1,204.58
6. Step 6: Final answer
   x = 831.90