Finding the Fourth Proportional to 2,870.94, 4,306.52 and 791.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.94 : 4,306.52 = 791.11 : x
2. Step 2: Convert to fraction form
   2,870.94/4,306.52 = 791.11/x
3. Step 3: Cross multiply
   2,870.94x = 4,306.52 × 791.11
4. Step 4: Simplify right side
   2,870.94x = 3,406,922.25
5. Step 5: Solve for x
   x = 3,406,922.25/2,870.94
6. Step 6: Final answer
   x = 1,186.69