Finding the Fourth Proportional to 1,151.50, 1,726.33 and 663.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.50 : 1,726.33 = 663.98 : x
2. Step 2: Convert to fraction form
   1,151.50/1,726.33 = 663.98/x
3. Step 3: Cross multiply
   1,151.50x = 1,726.33 × 663.98
4. Step 4: Simplify right side
   1,151.50x = 1,146,248.59
5. Step 5: Solve for x
   x = 1,146,248.59/1,151.50
6. Step 6: Final answer
   x = 995.44