Finding the Fourth Proportional to 2,936.39, 4,404.78 and 987.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,936.39 : 4,404.78 = 987.93 : x
2. Step 2: Convert to fraction form
   2,936.39/4,404.78 = 987.93/x
3. Step 3: Cross multiply
   2,936.39x = 4,404.78 × 987.93
4. Step 4: Simplify right side
   2,936.39x = 4,351,614.31
5. Step 5: Solve for x
   x = 4,351,614.31/2,936.39
6. Step 6: Final answer
   x = 1,481.96