Finding the Fourth Proportional to 1,895.49, 2,615.05 and 1,399.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,895.49 : 2,615.05 = 1,399.31 : x
2. Step 2: Convert to fraction form
   1,895.49/2,615.05 = 1,399.31/x
3. Step 3: Cross multiply
   1,895.49x = 2,615.05 × 1,399.31
4. Step 4: Simplify right side
   1,895.49x = 3,659,258.62
5. Step 5: Solve for x
   x = 3,659,258.62/1,895.49
6. Step 6: Final answer
   x = 1,930.51