Finding the Fourth Proportional to 2,219.47, 3,062.86 and 1,224.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.47 : 3,062.86 = 1,224.81 : x
2. Step 2: Convert to fraction form
   2,219.47/3,062.86 = 1,224.81/x
3. Step 3: Cross multiply
   2,219.47x = 3,062.86 × 1,224.81
4. Step 4: Simplify right side
   2,219.47x = 3,751,421.56
5. Step 5: Solve for x
   x = 3,751,421.56/2,219.47
6. Step 6: Final answer
   x = 1,690.23