Finding the Fourth Proportional to 1,017.69, 1,525.32 and 773.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.69 : 1,525.32 = 773.48 : x
2. Step 2: Convert to fraction form
   1,017.69/1,525.32 = 773.48/x
3. Step 3: Cross multiply
   1,017.69x = 1,525.32 × 773.48
4. Step 4: Simplify right side
   1,017.69x = 1,179,804.51
5. Step 5: Solve for x
   x = 1,179,804.51/1,017.69
6. Step 6: Final answer
   x = 1,159.30