Finding the Fourth Proportional to 1,933.59, 2,667.36 and 1,224.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,933.59 : 2,667.36 = 1,224.23 : x
2. Step 2: Convert to fraction form
   1,933.59/2,667.36 = 1,224.23/x
3. Step 3: Cross multiply
   1,933.59x = 2,667.36 × 1,224.23
4. Step 4: Simplify right side
   1,933.59x = 3,265,462.13
5. Step 5: Solve for x
   x = 3,265,462.13/1,933.59
6. Step 6: Final answer
   x = 1,688.81