Finding the Fourth Proportional to 2,081.68, 2,876.52 and 1,980.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.68 : 2,876.52 = 1,980.44 : x
2. Step 2: Convert to fraction form
   2,081.68/2,876.52 = 1,980.44/x
3. Step 3: Cross multiply
   2,081.68x = 2,876.52 × 1,980.44
4. Step 4: Simplify right side
   2,081.68x = 5,696,775.27
5. Step 5: Solve for x
   x = 5,696,775.27/2,081.68
6. Step 6: Final answer
   x = 2,736.62