Finding the Fourth Proportional to 1,529.67, 2,111.25 and 866.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,529.67 : 2,111.25 = 866.55 : x
2. Step 2: Convert to fraction form
   1,529.67/2,111.25 = 866.55/x
3. Step 3: Cross multiply
   1,529.67x = 2,111.25 × 866.55
4. Step 4: Simplify right side
   1,529.67x = 1,829,503.69
5. Step 5: Solve for x
   x = 1,829,503.69/1,529.67
6. Step 6: Final answer
   x = 1,196.01