Finding the Fourth Proportional to 2,627.40, 3,933.81 and 1,326.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,627.40 : 3,933.81 = 1,326.15 : x
2. Step 2: Convert to fraction form
   2,627.40/3,933.81 = 1,326.15/x
3. Step 3: Cross multiply
   2,627.40x = 3,933.81 × 1,326.15
4. Step 4: Simplify right side
   2,627.40x = 5,216,822.13
5. Step 5: Solve for x
   x = 5,216,822.13/2,627.40
6. Step 6: Final answer
   x = 1,985.55