Finding the Fourth Proportional to 1,002.26, 1,503.39 and 760.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.26 : 1,503.39 = 760.28 : x
2. Step 2: Convert to fraction form
   1,002.26/1,503.39 = 760.28/x
3. Step 3: Cross multiply
   1,002.26x = 1,503.39 × 760.28
4. Step 4: Simplify right side
   1,002.26x = 1,142,989.83
5. Step 5: Solve for x
   x = 1,142,989.83/1,002.26
6. Step 6: Final answer
   x = 1,140.42