Finding the Fourth Proportional to 1,016.89, 1,403.30 and 551.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.89 : 1,403.30 = 551.14 : x
2. Step 2: Convert to fraction form
   1,016.89/1,403.30 = 551.14/x
3. Step 3: Cross multiply
   1,016.89x = 1,403.30 × 551.14
4. Step 4: Simplify right side
   1,016.89x = 773,412.63
5. Step 5: Solve for x
   x = 773,412.63/1,016.89
6. Step 6: Final answer
   x = 760.57