Finding the Fourth Proportional to 1,035.86, 1,428.86 and 756.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,035.86 : 1,428.86 = 756.42 : x
2. Step 2: Convert to fraction form
   1,035.86/1,428.86 = 756.42/x
3. Step 3: Cross multiply
   1,035.86x = 1,428.86 × 756.42
4. Step 4: Simplify right side
   1,035.86x = 1,080,818.28
5. Step 5: Solve for x
   x = 1,080,818.28/1,035.86
6. Step 6: Final answer
   x = 1,043.40