Finding the Fourth Proportional to 1,488.93, 2,054.65 and 825.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.93 : 2,054.65 = 825.76 : x
2. Step 2: Convert to fraction form
   1,488.93/2,054.65 = 825.76/x
3. Step 3: Cross multiply
   1,488.93x = 2,054.65 × 825.76
4. Step 4: Simplify right side
   1,488.93x = 1,696,650.59
5. Step 5: Solve for x
   x = 1,696,650.59/1,488.93
6. Step 6: Final answer
   x = 1,139.51