Finding the Fourth Proportional to 2,913.84, 4,014.82 and 1,980.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,913.84 : 4,014.82 = 1,980.72 : x
2. Step 2: Convert to fraction form
   2,913.84/4,014.82 = 1,980.72/x
3. Step 3: Cross multiply
   2,913.84x = 4,014.82 × 1,980.72
4. Step 4: Simplify right side
   2,913.84x = 7,952,234.27
5. Step 5: Solve for x
   x = 7,952,234.27/2,913.84
6. Step 6: Final answer
   x = 2,729.13