Finding the Fourth Proportional to 2,625.57, 3,940.38 and 983.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,625.57 : 3,940.38 = 983.30 : x
2. Step 2: Convert to fraction form
   2,625.57/3,940.38 = 983.30/x
3. Step 3: Cross multiply
   2,625.57x = 3,940.38 × 983.30
4. Step 4: Simplify right side
   2,625.57x = 3,874,555.95
5. Step 5: Solve for x
   x = 3,874,555.95/2,625.57
6. Step 6: Final answer
   x = 1,475.70