Finding the Fourth Proportional to 1,891.49, 2,609.53 and 1,395.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,891.49 : 2,609.53 = 1,395.31 : x
2. Step 2: Convert to fraction form
   1,891.49/2,609.53 = 1,395.31/x
3. Step 3: Cross multiply
   1,891.49x = 2,609.53 × 1,395.31
4. Step 4: Simplify right side
   1,891.49x = 3,641,096.33
5. Step 5: Solve for x
   x = 3,641,096.33/1,891.49
6. Step 6: Final answer
   x = 1,924.99