Finding the Fourth Proportional to 2,137.78, 3,205.76 and 1,262.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137.78 : 3,205.76 = 1,262.03 : x
2. Step 2: Convert to fraction form
   2,137.78/3,205.76 = 1,262.03/x
3. Step 3: Cross multiply
   2,137.78x = 3,205.76 × 1,262.03
4. Step 4: Simplify right side
   2,137.78x = 4,045,765.29
5. Step 5: Solve for x
   x = 4,045,765.29/2,137.78
6. Step 6: Final answer
   x = 1,892.51