Finding the Fourth Proportional to 1,139.55, 1,709.33 and 562.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.55 : 1,709.33 = 562.47 : x
2. Step 2: Convert to fraction form
   1,139.55/1,709.33 = 562.47/x
3. Step 3: Cross multiply
   1,139.55x = 1,709.33 × 562.47
4. Step 4: Simplify right side
   1,139.55x = 961,444.03
5. Step 5: Solve for x
   x = 961,444.03/1,139.55
6. Step 6: Final answer
   x = 843.71