Finding the Fourth Proportional to 2,090.34, 3,136.86 and 791.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.34 : 3,136.86 = 791.79 : x
2. Step 2: Convert to fraction form
   2,090.34/3,136.86 = 791.79/x
3. Step 3: Cross multiply
   2,090.34x = 3,136.86 × 791.79
4. Step 4: Simplify right side
   2,090.34x = 2,483,734.38
5. Step 5: Solve for x
   x = 2,483,734.38/2,090.34
6. Step 6: Final answer
   x = 1,188.20