Finding the Fourth Proportional to 2,877.20, 4,315.89 and 797.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.20 : 4,315.89 = 797.02 : x
2. Step 2: Convert to fraction form
   2,877.20/4,315.89 = 797.02/x
3. Step 3: Cross multiply
   2,877.20x = 4,315.89 × 797.02
4. Step 4: Simplify right side
   2,877.20x = 3,439,852.06
5. Step 5: Solve for x
   x = 3,439,852.06/2,877.20
6. Step 6: Final answer
   x = 1,195.56