Finding the Fourth Proportional to 2,505.50, 3,457.62 and 1,386.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.50 : 3,457.62 = 1,386.52 : x
2. Step 2: Convert to fraction form
   2,505.50/3,457.62 = 1,386.52/x
3. Step 3: Cross multiply
   2,505.50x = 3,457.62 × 1,386.52
4. Step 4: Simplify right side
   2,505.50x = 4,794,059.28
5. Step 5: Solve for x
   x = 4,794,059.28/2,505.50
6. Step 6: Final answer
   x = 1,913.41