Finding the Fourth Proportional to 1,018.00, 1,527.06 and 287.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.00 : 1,527.06 = 287.51 : x
2. Step 2: Convert to fraction form
   1,018.00/1,527.06 = 287.51/x
3. Step 3: Cross multiply
   1,018.00x = 1,527.06 × 287.51
4. Step 4: Simplify right side
   1,018.00x = 439,045.02
5. Step 5: Solve for x
   x = 439,045.02/1,018.00
6. Step 6: Final answer
   x = 431.28