Finding the Fourth Proportional to 1,488.40, 2,054.04 and 825.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.40 : 2,054.04 = 825.29 : x
2. Step 2: Convert to fraction form
   1,488.40/2,054.04 = 825.29/x
3. Step 3: Cross multiply
   1,488.40x = 2,054.04 × 825.29
4. Step 4: Simplify right side
   1,488.40x = 1,695,178.67
5. Step 5: Solve for x
   x = 1,695,178.67/1,488.40
6. Step 6: Final answer
   x = 1,138.93