Finding the Fourth Proportional to 2,109.86, 3,165.10 and 793.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.86 : 3,165.10 = 793.42 : x
2. Step 2: Convert to fraction form
   2,109.86/3,165.10 = 793.42/x
3. Step 3: Cross multiply
   2,109.86x = 3,165.10 × 793.42
4. Step 4: Simplify right side
   2,109.86x = 2,511,253.64
5. Step 5: Solve for x
   x = 2,511,253.64/2,109.86
6. Step 6: Final answer
   x = 1,190.25