Finding the Fourth Proportional to 2,627.42, 3,939 and 983.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,627.42 : 3,939 = 983.72 : x
2. Step 2: Convert to fraction form
   2,627.42/3,939 = 983.72/x
3. Step 3: Cross multiply
   2,627.42x = 3,939 × 983.72
4. Step 4: Simplify right side
   2,627.42x = 3,874,873.08
5. Step 5: Solve for x
   x = 3,874,873.08/2,627.42
6. Step 6: Final answer
   x = 1,474.78