Finding the Fourth Proportional to 1,216.10, 1,677.61 and 1,050.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216.10 : 1,677.61 = 1,050.28 : x
2. Step 2: Convert to fraction form
   1,216.10/1,677.61 = 1,050.28/x
3. Step 3: Cross multiply
   1,216.10x = 1,677.61 × 1,050.28
4. Step 4: Simplify right side
   1,216.10x = 1,761,960.23
5. Step 5: Solve for x
   x = 1,761,960.23/1,216.10
6. Step 6: Final answer
   x = 1,448.86