Finding the Fourth Proportional to 2,356.41, 3,251.56 and 1,399.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,356.41 : 3,251.56 = 1,399.17 : x
2. Step 2: Convert to fraction form
   2,356.41/3,251.56 = 1,399.17/x
3. Step 3: Cross multiply
   2,356.41x = 3,251.56 × 1,399.17
4. Step 4: Simplify right side
   2,356.41x = 4,549,485.21
5. Step 5: Solve for x
   x = 4,549,485.21/2,356.41
6. Step 6: Final answer
   x = 1,930.68