Finding the Fourth Proportional to 2,391.96, 3,300.61 and 1,396.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.96 : 3,300.61 = 1,396.51 : x
2. Step 2: Convert to fraction form
   2,391.96/3,300.61 = 1,396.51/x
3. Step 3: Cross multiply
   2,391.96x = 3,300.61 × 1,396.51
4. Step 4: Simplify right side
   2,391.96x = 4,609,334.87
5. Step 5: Solve for x
   x = 4,609,334.87/2,391.96
6. Step 6: Final answer
   x = 1,927.01