Finding the Fourth Proportional to 1,368.52, 1,888.76 and 871.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.52 : 1,888.76 = 871.37 : x
2. Step 2: Convert to fraction form
   1,368.52/1,888.76 = 871.37/x
3. Step 3: Cross multiply
   1,368.52x = 1,888.76 × 871.37
4. Step 4: Simplify right side
   1,368.52x = 1,645,808.80
5. Step 5: Solve for x
   x = 1,645,808.80/1,368.52
6. Step 6: Final answer
   x = 1,202.62