Finding the Fourth Proportional to 1,488.97, 2,054.82 and 825.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.97 : 2,054.82 = 825.85 : x
2. Step 2: Convert to fraction form
   1,488.97/2,054.82 = 825.85/x
3. Step 3: Cross multiply
   1,488.97x = 2,054.82 × 825.85
4. Step 4: Simplify right side
   1,488.97x = 1,696,973.10
5. Step 5: Solve for x
   x = 1,696,973.10/1,488.97
6. Step 6: Final answer
   x = 1,139.70