Finding the Fourth Proportional to 1,316.15, 1,816.07 and 756.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,316.15 : 1,816.07 = 756.42 : x
2. Step 2: Convert to fraction form
   1,316.15/1,816.07 = 756.42/x
3. Step 3: Cross multiply
   1,316.15x = 1,816.07 × 756.42
4. Step 4: Simplify right side
   1,316.15x = 1,373,707.89
5. Step 5: Solve for x
   x = 1,373,707.89/1,316.15
6. Step 6: Final answer
   x = 1,043.73