Finding the Fourth Proportional to 1,962.50, 2,709.59 and 1,216.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.50 : 2,709.59 = 1,216.76 : x
2. Step 2: Convert to fraction form
   1,962.50/2,709.59 = 1,216.76/x
3. Step 3: Cross multiply
   1,962.50x = 2,709.59 × 1,216.76
4. Step 4: Simplify right side
   1,962.50x = 3,296,901.10
5. Step 5: Solve for x
   x = 3,296,901.10/1,962.50
6. Step 6: Final answer
   x = 1,679.95