Finding the Fourth Proportional to 1,151.94, 1,723.78 and 662.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.94 : 1,723.78 = 662.59 : x
2. Step 2: Convert to fraction form
   1,151.94/1,723.78 = 662.59/x
3. Step 3: Cross multiply
   1,151.94x = 1,723.78 × 662.59
4. Step 4: Simplify right side
   1,151.94x = 1,142,159.39
5. Step 5: Solve for x
   x = 1,142,159.39/1,151.94
6. Step 6: Final answer
   x = 991.51