Finding the Fourth Proportional to 2,295.21, 3,167.98 and 1,399.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,295.21 : 3,167.98 = 1,399.56 : x
2. Step 2: Convert to fraction form
   2,295.21/3,167.98 = 1,399.56/x
3. Step 3: Cross multiply
   2,295.21x = 3,167.98 × 1,399.56
4. Step 4: Simplify right side
   2,295.21x = 4,433,780.53
5. Step 5: Solve for x
   x = 4,433,780.53/2,295.21
6. Step 6: Final answer
   x = 1,931.75