Finding the Fourth Proportional to 1,042.05, 1,436.37 and 762.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,042.05 : 1,436.37 = 762.30 : x
2. Step 2: Convert to fraction form
   1,042.05/1,436.37 = 762.30/x
3. Step 3: Cross multiply
   1,042.05x = 1,436.37 × 762.30
4. Step 4: Simplify right side
   1,042.05x = 1,094,944.85
5. Step 5: Solve for x
   x = 1,094,944.85/1,042.05
6. Step 6: Final answer
   x = 1,050.76