Finding the Fourth Proportional to 1,766.16, 2,648.04 and 791.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,766.16 : 2,648.04 = 791.76 : x
2. Step 2: Convert to fraction form
   1,766.16/2,648.04 = 791.76/x
3. Step 3: Cross multiply
   1,766.16x = 2,648.04 × 791.76
4. Step 4: Simplify right side
   1,766.16x = 2,096,612.15
5. Step 5: Solve for x
   x = 2,096,612.15/1,766.16
6. Step 6: Final answer
   x = 1,187.10