Finding the Fourth Proportional to 1,011.42, 1,395.82 and 569.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011.42 : 1,395.82 = 569.47 : x
2. Step 2: Convert to fraction form
   1,011.42/1,395.82 = 569.47/x
3. Step 3: Cross multiply
   1,011.42x = 1,395.82 × 569.47
4. Step 4: Simplify right side
   1,011.42x = 794,877.62
5. Step 5: Solve for x
   x = 794,877.62/1,011.42
6. Step 6: Final answer
   x = 785.90