Finding the Fourth Proportional to 3,478.32, 5,218.47 and 1,013.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,478.32 : 5,218.47 = 1,013.34 : x
2. Step 2: Convert to fraction form
   3,478.32/5,218.47 = 1,013.34/x
3. Step 3: Cross multiply
   3,478.32x = 5,218.47 × 1,013.34
4. Step 4: Simplify right side
   3,478.32x = 5,288,084.39
5. Step 5: Solve for x
   x = 5,288,084.39/3,478.32
6. Step 6: Final answer
   x = 1,520.30