Finding the Fourth Proportional to 1,151.01, 1,726.47 and 285.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.01 : 1,726.47 = 285.30 : x
2. Step 2: Convert to fraction form
   1,151.01/1,726.47 = 285.30/x
3. Step 3: Cross multiply
   1,151.01x = 1,726.47 × 285.30
4. Step 4: Simplify right side
   1,151.01x = 492,561.89
5. Step 5: Solve for x
   x = 492,561.89/1,151.01
6. Step 6: Final answer
   x = 427.94