Finding the Fourth Proportional to 2,505.34, 3,457.25 and 1,386.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.34 : 3,457.25 = 1,386.26 : x
2. Step 2: Convert to fraction form
   2,505.34/3,457.25 = 1,386.26/x
3. Step 3: Cross multiply
   2,505.34x = 3,457.25 × 1,386.26
4. Step 4: Simplify right side
   2,505.34x = 4,792,641.33
5. Step 5: Solve for x
   x = 4,792,641.33/2,505.34
6. Step 6: Final answer
   x = 1,912.97