Finding the Fourth Proportional to 2,219.48, 3,062.89 and 1,224.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.48 : 3,062.89 = 1,224.75 : x
2. Step 2: Convert to fraction form
   2,219.48/3,062.89 = 1,224.75/x
3. Step 3: Cross multiply
   2,219.48x = 3,062.89 × 1,224.75
4. Step 4: Simplify right side
   2,219.48x = 3,751,279.12
5. Step 5: Solve for x
   x = 3,751,279.12/2,219.48
6. Step 6: Final answer
   x = 1,690.17