Finding the Fourth Proportional to 1,364.80, 1,882.74 and 866.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,364.80 : 1,882.74 = 866.62 : x
2. Step 2: Convert to fraction form
   1,364.80/1,882.74 = 866.62/x
3. Step 3: Cross multiply
   1,364.80x = 1,882.74 × 866.62
4. Step 4: Simplify right side
   1,364.80x = 1,631,620.14
5. Step 5: Solve for x
   x = 1,631,620.14/1,364.80
6. Step 6: Final answer
   x = 1,195.50