Finding the Fourth Proportional to 2,012.96, 2,777.78 and 1,173.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.96 : 2,777.78 = 1,173.68 : x
2. Step 2: Convert to fraction form
   2,012.96/2,777.78 = 1,173.68/x
3. Step 3: Cross multiply
   2,012.96x = 2,777.78 × 1,173.68
4. Step 4: Simplify right side
   2,012.96x = 3,260,224.83
5. Step 5: Solve for x
   x = 3,260,224.83/2,012.96
6. Step 6: Final answer
   x = 1,619.62