Finding the Fourth Proportional to 1,111.84, 1,668.60 and 563.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.84 : 1,668.60 = 563.72 : x
2. Step 2: Convert to fraction form
   1,111.84/1,668.60 = 563.72/x
3. Step 3: Cross multiply
   1,111.84x = 1,668.60 × 563.72
4. Step 4: Simplify right side
   1,111.84x = 940,614.85
5. Step 5: Solve for x
   x = 940,614.85/1,111.84
6. Step 6: Final answer
   x = 846.00