Finding the Fourth Proportional to 2,171.34, 3,252.69 and 1,399.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171.34 : 3,252.69 = 1,399.50 : x
2. Step 2: Convert to fraction form
   2,171.34/3,252.69 = 1,399.50/x
3. Step 3: Cross multiply
   2,171.34x = 3,252.69 × 1,399.50
4. Step 4: Simplify right side
   2,171.34x = 4,552,139.66
5. Step 5: Solve for x
   x = 4,552,139.66/2,171.34
6. Step 6: Final answer
   x = 2,096.47