Finding the Fourth Proportional to 1,131.56, 1,698.38 and 584.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.56 : 1,698.38 = 584.12 : x
2. Step 2: Convert to fraction form
   1,131.56/1,698.38 = 584.12/x
3. Step 3: Cross multiply
   1,131.56x = 1,698.38 × 584.12
4. Step 4: Simplify right side
   1,131.56x = 992,057.73
5. Step 5: Solve for x
   x = 992,057.73/1,131.56
6. Step 6: Final answer
   x = 876.72