Finding the Fourth Proportional to 2,090.78, 3,136.32 and 792.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.78 : 3,136.32 = 792.25 : x
2. Step 2: Convert to fraction form
   2,090.78/3,136.32 = 792.25/x
3. Step 3: Cross multiply
   2,090.78x = 3,136.32 × 792.25
4. Step 4: Simplify right side
   2,090.78x = 2,484,749.52
5. Step 5: Solve for x
   x = 2,484,749.52/2,090.78
6. Step 6: Final answer
   x = 1,188.43