Finding the Fourth Proportional to 1,343.85, 1,854.34 and 784.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.85 : 1,854.34 = 784.25 : x
2. Step 2: Convert to fraction form
   1,343.85/1,854.34 = 784.25/x
3. Step 3: Cross multiply
   1,343.85x = 1,854.34 × 784.25
4. Step 4: Simplify right side
   1,343.85x = 1,454,266.15
5. Step 5: Solve for x
   x = 1,454,266.15/1,343.85
6. Step 6: Final answer
   x = 1,082.16