Finding the Fourth Proportional to 1,343.16, 1,853.40 and 753.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.16 : 1,853.40 = 753.68 : x
2. Step 2: Convert to fraction form
   1,343.16/1,853.40 = 753.68/x
3. Step 3: Cross multiply
   1,343.16x = 1,853.40 × 753.68
4. Step 4: Simplify right side
   1,343.16x = 1,396,870.51
5. Step 5: Solve for x
   x = 1,396,870.51/1,343.16
6. Step 6: Final answer
   x = 1,039.99