Finding the Fourth Proportional to 2,151.91, 3,225.03 and 852.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.91 : 3,225.03 = 852.67 : x
2. Step 2: Convert to fraction form
   2,151.91/3,225.03 = 852.67/x
3. Step 3: Cross multiply
   2,151.91x = 3,225.03 × 852.67
4. Step 4: Simplify right side
   2,151.91x = 2,749,886.33
5. Step 5: Solve for x
   x = 2,749,886.33/2,151.91
6. Step 6: Final answer
   x = 1,277.88