Finding the Fourth Proportional to 1,973.17, 2,722.78 and 1,216.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,973.17 : 2,722.78 = 1,216.83 : x
2. Step 2: Convert to fraction form
   1,973.17/2,722.78 = 1,216.83/x
3. Step 3: Cross multiply
   1,973.17x = 2,722.78 × 1,216.83
4. Step 4: Simplify right side
   1,973.17x = 3,313,160.39
5. Step 5: Solve for x
   x = 3,313,160.39/1,973.17
6. Step 6: Final answer
   x = 1,679.11