Finding the Fourth Proportional to 2,936.58, 4,404.89 and 988.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,936.58 : 4,404.89 = 988.80 : x
2. Step 2: Convert to fraction form
   2,936.58/4,404.89 = 988.80/x
3. Step 3: Cross multiply
   2,936.58x = 4,404.89 × 988.80
4. Step 4: Simplify right side
   2,936.58x = 4,355,550.29
5. Step 5: Solve for x
   x = 4,355,550.29/2,936.58
6. Step 6: Final answer
   x = 1,483.21