Finding the Fourth Proportional to 3,920.03, 5,880.06 and 998.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,920.03 : 5,880.06 = 998.34 : x
2. Step 2: Convert to fraction form
   3,920.03/5,880.06 = 998.34/x
3. Step 3: Cross multiply
   3,920.03x = 5,880.06 × 998.34
4. Step 4: Simplify right side
   3,920.03x = 5,870,299.10
5. Step 5: Solve for x
   x = 5,870,299.10/3,920.03
6. Step 6: Final answer
   x = 1,497.52