Finding the Fourth Proportional to 1,350.72, 1,864.04 and 761.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.72 : 1,864.04 = 761.28 : x
2. Step 2: Convert to fraction form
   1,350.72/1,864.04 = 761.28/x
3. Step 3: Cross multiply
   1,350.72x = 1,864.04 × 761.28
4. Step 4: Simplify right side
   1,350.72x = 1,419,056.37
5. Step 5: Solve for x
   x = 1,419,056.37/1,350.72
6. Step 6: Final answer
   x = 1,050.59