Finding the Fourth Proportional to 2,171.94, 3,251.40 and 1,479.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171.94 : 3,251.40 = 1,479.30 : x
2. Step 2: Convert to fraction form
   2,171.94/3,251.40 = 1,479.30/x
3. Step 3: Cross multiply
   2,171.94x = 3,251.40 × 1,479.30
4. Step 4: Simplify right side
   2,171.94x = 4,809,796.02
5. Step 5: Solve for x
   x = 4,809,796.02/2,171.94
6. Step 6: Final answer
   x = 2,214.52