Finding the Fourth Proportional to 2,315.48, 3,196.40 and 1,477.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.48 : 3,196.40 = 1,477.31 : x
2. Step 2: Convert to fraction form
   2,315.48/3,196.40 = 1,477.31/x
3. Step 3: Cross multiply
   2,315.48x = 3,196.40 × 1,477.31
4. Step 4: Simplify right side
   2,315.48x = 4,722,073.68
5. Step 5: Solve for x
   x = 4,722,073.68/2,315.48
6. Step 6: Final answer
   x = 2,039.35