Finding the Fourth Proportional to 2,505.39, 3,457.70 and 1,443.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.39 : 3,457.70 = 1,443.19 : x
2. Step 2: Convert to fraction form
   2,505.39/3,457.70 = 1,443.19/x
3. Step 3: Cross multiply
   2,505.39x = 3,457.70 × 1,443.19
4. Step 4: Simplify right side
   2,505.39x = 4,990,126.71
5. Step 5: Solve for x
   x = 4,990,126.71/2,505.39
6. Step 6: Final answer
   x = 1,991.75