Finding the Fourth Proportional to 1,016.68, 1,526.72 and 608.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.68 : 1,526.72 = 608.36 : x
2. Step 2: Convert to fraction form
   1,016.68/1,526.72 = 608.36/x
3. Step 3: Cross multiply
   1,016.68x = 1,526.72 × 608.36
4. Step 4: Simplify right side
   1,016.68x = 928,795.38
5. Step 5: Solve for x
   x = 928,795.38/1,016.68
6. Step 6: Final answer
   x = 913.56