Finding the Fourth Proportional to 2,152.86, 3,225.66 and 980.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.86 : 3,225.66 = 980.94 : x
2. Step 2: Convert to fraction form
   2,152.86/3,225.66 = 980.94/x
3. Step 3: Cross multiply
   2,152.86x = 3,225.66 × 980.94
4. Step 4: Simplify right side
   2,152.86x = 3,164,178.92
5. Step 5: Solve for x
   x = 3,164,178.92/2,152.86
6. Step 6: Final answer
   x = 1,469.76