Finding the Fourth Proportional to 2,210.81, 3,050.83 and 1,216.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.81 : 3,050.83 = 1,216.03 : x
2. Step 2: Convert to fraction form
   2,210.81/3,050.83 = 1,216.03/x
3. Step 3: Cross multiply
   2,210.81x = 3,050.83 × 1,216.03
4. Step 4: Simplify right side
   2,210.81x = 3,709,900.80
5. Step 5: Solve for x
   x = 3,709,900.80/2,210.81
6. Step 6: Final answer
   x = 1,678.07