Finding the Fourth Proportional to 2,330.25, 3,215.84 and 1,399.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,330.25 : 3,215.84 = 1,399.29 : x
2. Step 2: Convert to fraction form
   2,330.25/3,215.84 = 1,399.29/x
3. Step 3: Cross multiply
   2,330.25x = 3,215.84 × 1,399.29
4. Step 4: Simplify right side
   2,330.25x = 4,499,885.76
5. Step 5: Solve for x
   x = 4,499,885.76/2,330.25
6. Step 6: Final answer
   x = 1,931.07