Finding the Fourth Proportional to 1,574.52, 2,172.98 and 866.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,574.52 : 2,172.98 = 866.50 : x
2. Step 2: Convert to fraction form
   1,574.52/2,172.98 = 866.50/x
3. Step 3: Cross multiply
   1,574.52x = 2,172.98 × 866.50
4. Step 4: Simplify right side
   1,574.52x = 1,882,885.55
5. Step 5: Solve for x
   x = 1,882,885.55/1,574.52
6. Step 6: Final answer
   x = 1,195.85