Finding the Fourth Proportional to 2,936.34, 4,401.46 and 987.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,936.34 : 4,401.46 = 987.88 : x
2. Step 2: Convert to fraction form
   2,936.34/4,401.46 = 987.88/x
3. Step 3: Cross multiply
   2,936.34x = 4,401.46 × 987.88
4. Step 4: Simplify right side
   2,936.34x = 4,348,114.30
5. Step 5: Solve for x
   x = 4,348,114.30/2,936.34
6. Step 6: Final answer
   x = 1,480.79