Finding the Fourth Proportional to 2,643, 3,965.06 and 793.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643 : 3,965.06 = 793.98 : x
2. Step 2: Convert to fraction form
   2,643/3,965.06 = 793.98/x
3. Step 3: Cross multiply
   2,643x = 3,965.06 × 793.98
4. Step 4: Simplify right side
   2,643x = 3,148,178.34
5. Step 5: Solve for x
   x = 3,148,178.34/2,643
6. Step 6: Final answer
   x = 1,191.14