Finding the Fourth Proportional to 1,011.96, 1,396.30 and 569.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011.96 : 1,396.30 = 569.84 : x
2. Step 2: Convert to fraction form
   1,011.96/1,396.30 = 569.84/x
3. Step 3: Cross multiply
   1,011.96x = 1,396.30 × 569.84
4. Step 4: Simplify right side
   1,011.96x = 795,667.59
5. Step 5: Solve for x
   x = 795,667.59/1,011.96
6. Step 6: Final answer
   x = 786.26