Finding the Fourth Proportional to 1,343.72, 1,854.33 and 784.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.72 : 1,854.33 = 784.26 : x
2. Step 2: Convert to fraction form
   1,343.72/1,854.33 = 784.26/x
3. Step 3: Cross multiply
   1,343.72x = 1,854.33 × 784.26
4. Step 4: Simplify right side
   1,343.72x = 1,454,276.85
5. Step 5: Solve for x
   x = 1,454,276.85/1,343.72
6. Step 6: Final answer
   x = 1,082.28