Finding the Fourth Proportional to 1,111.47, 1,666.79 and 563.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.47 : 1,666.79 = 563.30 : x
2. Step 2: Convert to fraction form
   1,111.47/1,666.79 = 563.30/x
3. Step 3: Cross multiply
   1,111.47x = 1,666.79 × 563.30
4. Step 4: Simplify right side
   1,111.47x = 938,902.81
5. Step 5: Solve for x
   x = 938,902.81/1,111.47
6. Step 6: Final answer
   x = 844.74