Finding the Fourth Proportional to 1,366.52, 1,886.00 and 869.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.52 : 1,886.00 = 869.37 : x
2. Step 2: Convert to fraction form
   1,366.52/1,886.00 = 869.37/x
3. Step 3: Cross multiply
   1,366.52x = 1,886.00 × 869.37
4. Step 4: Simplify right side
   1,366.52x = 1,639,627.47
5. Step 5: Solve for x
   x = 1,639,627.47/1,366.52
6. Step 6: Final answer
   x = 1,199.86