Finding the Fourth Proportional to 3,304.89, 4,950.72 and 1,987.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,304.89 : 4,950.72 = 1,987.91 : x
2. Step 2: Convert to fraction form
   3,304.89/4,950.72 = 1,987.91/x
3. Step 3: Cross multiply
   3,304.89x = 4,950.72 × 1,987.91
4. Step 4: Simplify right side
   3,304.89x = 9,841,600.49
5. Step 5: Solve for x
   x = 9,841,600.49/3,304.89
6. Step 6: Final answer
   x = 2,977.89