Finding the Fourth Proportional to 1,395.52, 1,924.56 and 871.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.52 : 1,924.56 = 871.60 : x
2. Step 2: Convert to fraction form
   1,395.52/1,924.56 = 871.60/x
3. Step 3: Cross multiply
   1,395.52x = 1,924.56 × 871.60
4. Step 4: Simplify right side
   1,395.52x = 1,677,446.50
5. Step 5: Solve for x
   x = 1,677,446.50/1,395.52
6. Step 6: Final answer
   x = 1,202.02