Finding the Fourth Proportional to 2,457.89, 3,391.97 and 1,338.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,457.89 : 3,391.97 = 1,338.76 : x
2. Step 2: Convert to fraction form
   2,457.89/3,391.97 = 1,338.76/x
3. Step 3: Cross multiply
   2,457.89x = 3,391.97 × 1,338.76
4. Step 4: Simplify right side
   2,457.89x = 4,541,010.10
5. Step 5: Solve for x
   x = 4,541,010.10/2,457.89
6. Step 6: Final answer
   x = 1,847.52