Finding the Fourth Proportional to 2,477.79, 3,716.72 and 722.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477.79 : 3,716.72 = 722.80 : x
2. Step 2: Convert to fraction form
   2,477.79/3,716.72 = 722.80/x
3. Step 3: Cross multiply
   2,477.79x = 3,716.72 × 722.80
4. Step 4: Simplify right side
   2,477.79x = 2,686,424.83
5. Step 5: Solve for x
   x = 2,686,424.83/2,477.79
6. Step 6: Final answer
   x = 1,084.20