Finding the Fourth Proportional to 2,152.61, 3,225.86 and 979.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.61 : 3,225.86 = 979.73 : x
2. Step 2: Convert to fraction form
   2,152.61/3,225.86 = 979.73/x
3. Step 3: Cross multiply
   2,152.61x = 3,225.86 × 979.73
4. Step 4: Simplify right side
   2,152.61x = 3,160,466.56
5. Step 5: Solve for x
   x = 3,160,466.56/2,152.61
6. Step 6: Final answer
   x = 1,468.20