Finding the Fourth Proportional to 1,015.72, 1,402.18 and 767.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.72 : 1,402.18 = 767.14 : x
2. Step 2: Convert to fraction form
   1,015.72/1,402.18 = 767.14/x
3. Step 3: Cross multiply
   1,015.72x = 1,402.18 × 767.14
4. Step 4: Simplify right side
   1,015.72x = 1,075,668.37
5. Step 5: Solve for x
   x = 1,075,668.37/1,015.72
6. Step 6: Final answer
   x = 1,059.02