Finding the Fourth Proportional to 2,172.89, 3,254.73 and 1,976.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.89 : 3,254.73 = 1,976.82 : x
2. Step 2: Convert to fraction form
   2,172.89/3,254.73 = 1,976.82/x
3. Step 3: Cross multiply
   2,172.89x = 3,254.73 × 1,976.82
4. Step 4: Simplify right side
   2,172.89x = 6,434,025.17
5. Step 5: Solve for x
   x = 6,434,025.17/2,172.89
6. Step 6: Final answer
   x = 2,961.04