Finding the Fourth Proportional to 1,111.28, 1,667.97 and 563.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.28 : 1,667.97 = 563.86 : x
2. Step 2: Convert to fraction form
   1,111.28/1,667.97 = 563.86/x
3. Step 3: Cross multiply
   1,111.28x = 1,667.97 × 563.86
4. Step 4: Simplify right side
   1,111.28x = 940,497.39
5. Step 5: Solve for x
   x = 940,497.39/1,111.28
6. Step 6: Final answer
   x = 846.32