Finding the Fourth Proportional to 1,488.56, 2,054.18 and 825.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.56 : 2,054.18 = 825.41 : x
2. Step 2: Convert to fraction form
   1,488.56/2,054.18 = 825.41/x
3. Step 3: Cross multiply
   1,488.56x = 2,054.18 × 825.41
4. Step 4: Simplify right side
   1,488.56x = 1,695,547.91
5. Step 5: Solve for x
   x = 1,695,547.91/1,488.56
6. Step 6: Final answer
   x = 1,139.06