Finding the Fourth Proportional to 1,367.53, 1,886.89 and 869.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.53 : 1,886.89 = 869.98 : x
2. Step 2: Convert to fraction form
   1,367.53/1,886.89 = 869.98/x
3. Step 3: Cross multiply
   1,367.53x = 1,886.89 × 869.98
4. Step 4: Simplify right side
   1,367.53x = 1,641,556.56
5. Step 5: Solve for x
   x = 1,641,556.56/1,367.53
6. Step 6: Final answer
   x = 1,200.38