Finding the Fourth Proportional to 1,515.61, 2,091.46 and 852.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,515.61 : 2,091.46 = 852.42 : x
2. Step 2: Convert to fraction form
   1,515.61/2,091.46 = 852.42/x
3. Step 3: Cross multiply
   1,515.61x = 2,091.46 × 852.42
4. Step 4: Simplify right side
   1,515.61x = 1,782,797.88
5. Step 5: Solve for x
   x = 1,782,797.88/1,515.61
6. Step 6: Final answer
   x = 1,176.29