Finding the Fourth Proportional to 3,002.32, 4,503.15 and 781.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,002.32 : 4,503.15 = 781.18 : x
2. Step 2: Convert to fraction form
   3,002.32/4,503.15 = 781.18/x
3. Step 3: Cross multiply
   3,002.32x = 4,503.15 × 781.18
4. Step 4: Simplify right side
   3,002.32x = 3,517,770.72
5. Step 5: Solve for x
   x = 3,517,770.72/3,002.32
6. Step 6: Final answer
   x = 1,171.68