Finding the Fourth Proportional to 1,343.55, 1,853.69 and 871.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.55 : 1,853.69 = 871.46 : x
2. Step 2: Convert to fraction form
   1,343.55/1,853.69 = 871.46/x
3. Step 3: Cross multiply
   1,343.55x = 1,853.69 × 871.46
4. Step 4: Simplify right side
   1,343.55x = 1,615,403.06
5. Step 5: Solve for x
   x = 1,615,403.06/1,343.55
6. Step 6: Final answer
   x = 1,202.34