Finding the Fourth Proportional to 1,343.39, 1,853.84 and 783.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.39 : 1,853.84 = 783.83 : x
2. Step 2: Convert to fraction form
   1,343.39/1,853.84 = 783.83/x
3. Step 3: Cross multiply
   1,343.39x = 1,853.84 × 783.83
4. Step 4: Simplify right side
   1,343.39x = 1,453,082.22
5. Step 5: Solve for x
   x = 1,453,082.22/1,343.39
6. Step 6: Final answer
   x = 1,081.66