Finding the Fourth Proportional to 1,367.52, 1,887.38 and 870.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.52 : 1,887.38 = 870.37 : x
2. Step 2: Convert to fraction form
   1,367.52/1,887.38 = 870.37/x
3. Step 3: Cross multiply
   1,367.52x = 1,887.38 × 870.37
4. Step 4: Simplify right side
   1,367.52x = 1,642,718.93
5. Step 5: Solve for x
   x = 1,642,718.93/1,367.52
6. Step 6: Final answer
   x = 1,201.24