Finding the Fourth Proportional to 1,035.36, 1,429.32 and 786.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,035.36 : 1,429.32 = 786.72 : x
2. Step 2: Convert to fraction form
   1,035.36/1,429.32 = 786.72/x
3. Step 3: Cross multiply
   1,035.36x = 1,429.32 × 786.72
4. Step 4: Simplify right side
   1,035.36x = 1,124,474.63
5. Step 5: Solve for x
   x = 1,124,474.63/1,035.36
6. Step 6: Final answer
   x = 1,086.07