Finding the Fourth Proportional to 1,009.47, 1,393.20 and 567.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009.47 : 1,393.20 = 567.38 : x
2. Step 2: Convert to fraction form
   1,009.47/1,393.20 = 567.38/x
3. Step 3: Cross multiply
   1,009.47x = 1,393.20 × 567.38
4. Step 4: Simplify right side
   1,009.47x = 790,467.50
5. Step 5: Solve for x
   x = 790,467.50/1,009.47
6. Step 6: Final answer
   x = 783.05