Finding the Fourth Proportional to 1,152.65, 1,727.76 and 574.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.65 : 1,727.76 = 574.31 : x
2. Step 2: Convert to fraction form
   1,152.65/1,727.76 = 574.31/x
3. Step 3: Cross multiply
   1,152.65x = 1,727.76 × 574.31
4. Step 4: Simplify right side
   1,152.65x = 992,276.32
5. Step 5: Solve for x
   x = 992,276.32/1,152.65
6. Step 6: Final answer
   x = 860.86