Finding the Fourth Proportional to 1,111.86, 1,669.32 and 564.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.86 : 1,669.32 = 564.42 : x
2. Step 2: Convert to fraction form
   1,111.86/1,669.32 = 564.42/x
3. Step 3: Cross multiply
   1,111.86x = 1,669.32 × 564.42
4. Step 4: Simplify right side
   1,111.86x = 942,186.43
5. Step 5: Solve for x
   x = 942,186.43/1,111.86
6. Step 6: Final answer
   x = 847.40