Finding the Fourth Proportional to 1,010.72, 1,394.84 and 568.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010.72 : 1,394.84 = 568.76 : x
2. Step 2: Convert to fraction form
   1,010.72/1,394.84 = 568.76/x
3. Step 3: Cross multiply
   1,010.72x = 1,394.84 × 568.76
4. Step 4: Simplify right side
   1,010.72x = 793,329.20
5. Step 5: Solve for x
   x = 793,329.20/1,010.72
6. Step 6: Final answer
   x = 784.91