Finding the Fourth Proportional to 2,391.50, 3,300.28 and 1,343.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.50 : 3,300.28 = 1,343.90 : x
2. Step 2: Convert to fraction form
   2,391.50/3,300.28 = 1,343.90/x
3. Step 3: Cross multiply
   2,391.50x = 3,300.28 × 1,343.90
4. Step 4: Simplify right side
   2,391.50x = 4,435,246.29
5. Step 5: Solve for x
   x = 4,435,246.29/2,391.50
6. Step 6: Final answer
   x = 1,854.59