Finding the Fourth Proportional to 2,615.32, 3,923.24 and 766.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.32 : 3,923.24 = 766.46 : x
2. Step 2: Convert to fraction form
   2,615.32/3,923.24 = 766.46/x
3. Step 3: Cross multiply
   2,615.32x = 3,923.24 × 766.46
4. Step 4: Simplify right side
   2,615.32x = 3,007,012.51
5. Step 5: Solve for x
   x = 3,007,012.51/2,615.32
6. Step 6: Final answer
   x = 1,149.77