Finding the Fourth Proportional to 2,936.04, 4,404.90 and 987.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,936.04 : 4,404.90 = 987.72 : x
2. Step 2: Convert to fraction form
   2,936.04/4,404.90 = 987.72/x
3. Step 3: Cross multiply
   2,936.04x = 4,404.90 × 987.72
4. Step 4: Simplify right side
   2,936.04x = 4,350,807.83
5. Step 5: Solve for x
   x = 4,350,807.83/2,936.04
6. Step 6: Final answer
   x = 1,481.86