Finding the Fourth Proportional to 1,343.05, 1,853.39 and 753.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.05 : 1,853.39 = 753.57 : x
2. Step 2: Convert to fraction form
   1,343.05/1,853.39 = 753.57/x
3. Step 3: Cross multiply
   1,343.05x = 1,853.39 × 753.57
4. Step 4: Simplify right side
   1,343.05x = 1,396,660.99
5. Step 5: Solve for x
   x = 1,396,660.99/1,343.05
6. Step 6: Final answer
   x = 1,039.92