Finding the Fourth Proportional to 2,391.33, 3,298.26 and 1,396.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.33 : 3,298.26 = 1,396.55 : x
2. Step 2: Convert to fraction form
   2,391.33/3,298.26 = 1,396.55/x
3. Step 3: Cross multiply
   2,391.33x = 3,298.26 × 1,396.55
4. Step 4: Simplify right side
   2,391.33x = 4,606,185.00
5. Step 5: Solve for x
   x = 4,606,185.00/2,391.33
6. Step 6: Final answer
   x = 1,926.20