Finding the Fourth Proportional to 1,343.56, 1,853.98 and 784.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.56 : 1,853.98 = 784.38 : x
2. Step 2: Convert to fraction form
   1,343.56/1,853.98 = 784.38/x
3. Step 3: Cross multiply
   1,343.56x = 1,853.98 × 784.38
4. Step 4: Simplify right side
   1,343.56x = 1,454,224.83
5. Step 5: Solve for x
   x = 1,454,224.83/1,343.56
6. Step 6: Final answer
   x = 1,082.37