Finding the Fourth Proportional to 1,191.34, 1,784.56 and 573.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.34 : 1,784.56 = 573.22 : x
2. Step 2: Convert to fraction form
   1,191.34/1,784.56 = 573.22/x
3. Step 3: Cross multiply
   1,191.34x = 1,784.56 × 573.22
4. Step 4: Simplify right side
   1,191.34x = 1,022,945.48
5. Step 5: Solve for x
   x = 1,022,945.48/1,191.34
6. Step 6: Final answer
   x = 858.65