Finding the Fourth Proportional to 2,148.10, 2,963.13 and 1,216.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.10 : 2,963.13 = 1,216.42 : x
2. Step 2: Convert to fraction form
   2,148.10/2,963.13 = 1,216.42/x
3. Step 3: Cross multiply
   2,148.10x = 2,963.13 × 1,216.42
4. Step 4: Simplify right side
   2,148.10x = 3,604,410.59
5. Step 5: Solve for x
   x = 3,604,410.59/2,148.10
6. Step 6: Final answer
   x = 1,677.95