Finding the Fourth Proportional to 1,144.89, 1,716.75 and 528.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.89 : 1,716.75 = 528.06 : x
2. Step 2: Convert to fraction form
   1,144.89/1,716.75 = 528.06/x
3. Step 3: Cross multiply
   1,144.89x = 1,716.75 × 528.06
4. Step 4: Simplify right side
   1,144.89x = 906,547.01
5. Step 5: Solve for x
   x = 906,547.01/1,144.89
6. Step 6: Final answer
   x = 791.82