Finding the Fourth Proportional to 2,628.42, 3,939.93 and 983.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.42 : 3,939.93 = 983.82 : x
2. Step 2: Convert to fraction form
   2,628.42/3,939.93 = 983.82/x
3. Step 3: Cross multiply
   2,628.42x = 3,939.93 × 983.82
4. Step 4: Simplify right side
   2,628.42x = 3,876,181.93
5. Step 5: Solve for x
   x = 3,876,181.93/2,628.42
6. Step 6: Final answer
   x = 1,474.72