Finding the Fourth Proportional to 2,505.44, 3,457.58 and 1,386.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.44 : 3,457.58 = 1,386.52 : x
2. Step 2: Convert to fraction form
   2,505.44/3,457.58 = 1,386.52/x
3. Step 3: Cross multiply
   2,505.44x = 3,457.58 × 1,386.52
4. Step 4: Simplify right side
   2,505.44x = 4,794,003.82
5. Step 5: Solve for x
   x = 4,794,003.82/2,505.44
6. Step 6: Final answer
   x = 1,913.44