Finding the Fourth Proportional to 1,009.74, 1,393.33 and 567.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009.74 : 1,393.33 = 567.69 : x
2. Step 2: Convert to fraction form
   1,009.74/1,393.33 = 567.69/x
3. Step 3: Cross multiply
   1,009.74x = 1,393.33 × 567.69
4. Step 4: Simplify right side
   1,009.74x = 790,979.51
5. Step 5: Solve for x
   x = 790,979.51/1,009.74
6. Step 6: Final answer
   x = 783.35