Finding the Fourth Proportional to 2,753.91, 4,131.47 and 806.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,753.91 : 4,131.47 = 806.13 : x
2. Step 2: Convert to fraction form
   2,753.91/4,131.47 = 806.13/x
3. Step 3: Cross multiply
   2,753.91x = 4,131.47 × 806.13
4. Step 4: Simplify right side
   2,753.91x = 3,330,501.91
5. Step 5: Solve for x
   x = 3,330,501.91/2,753.91
6. Step 6: Final answer
   x = 1,209.37