Finding the Fourth Proportional to 1,016.88, 1,403.29 and 551.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.88 : 1,403.29 = 551.13 : x
2. Step 2: Convert to fraction form
   1,016.88/1,403.29 = 551.13/x
3. Step 3: Cross multiply
   1,016.88x = 1,403.29 × 551.13
4. Step 4: Simplify right side
   1,016.88x = 773,395.22
5. Step 5: Solve for x
   x = 773,395.22/1,016.88
6. Step 6: Final answer
   x = 760.56