Finding the Fourth Proportional to 976.17, 1,345.72 and 765.52

Step by Step Solution

1. Step 1: Write the proportion equation
   976.17 : 1,345.72 = 765.52 : x
2. Step 2: Convert to fraction form
   976.17/1,345.72 = 765.52/x
3. Step 3: Cross multiply
   976.17x = 1,345.72 × 765.52
4. Step 4: Simplify right side
   976.17x = 1,030,175.57
5. Step 5: Solve for x
   x = 1,030,175.57/976.17
6. Step 6: Final answer
   x = 1,055.32