Finding the Fourth Proportional to 1,367.68, 1,888.02 and 870.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.68 : 1,888.02 = 870.99 : x
2. Step 2: Convert to fraction form
   1,367.68/1,888.02 = 870.99/x
3. Step 3: Cross multiply
   1,367.68x = 1,888.02 × 870.99
4. Step 4: Simplify right side
   1,367.68x = 1,644,446.54
5. Step 5: Solve for x
   x = 1,644,446.54/1,367.68
6. Step 6: Final answer
   x = 1,202.36