Finding the Fourth Proportional to 926.69, 1,278.50 and 760.86

Step by Step Solution

1. Step 1: Write the proportion equation
   926.69 : 1,278.50 = 760.86 : x
2. Step 2: Convert to fraction form
   926.69/1,278.50 = 760.86/x
3. Step 3: Cross multiply
   926.69x = 1,278.50 × 760.86
4. Step 4: Simplify right side
   926.69x = 972,755.71
5. Step 5: Solve for x
   x = 972,755.71/926.69
6. Step 6: Final answer
   x = 1,049.72