Finding the Fourth Proportional to 2,148.02, 2,964.33 and 1,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.02 : 2,964.33 = 1,216.50 : x
2. Step 2: Convert to fraction form
   2,148.02/2,964.33 = 1,216.50/x
3. Step 3: Cross multiply
   2,148.02x = 2,964.33 × 1,216.50
4. Step 4: Simplify right side
   2,148.02x = 3,606,107.45
5. Step 5: Solve for x
   x = 3,606,107.45/2,148.02
6. Step 6: Final answer
   x = 1,678.81