Finding the Fourth Proportional to 3,346.30, 5,019.86 and 1,398.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,346.30 : 5,019.86 = 1,398.25 : x
2. Step 2: Convert to fraction form
   3,346.30/5,019.86 = 1,398.25/x
3. Step 3: Cross multiply
   3,346.30x = 5,019.86 × 1,398.25
4. Step 4: Simplify right side
   3,346.30x = 7,019,019.25
5. Step 5: Solve for x
   x = 7,019,019.25/3,346.30
6. Step 6: Final answer
   x = 2,097.55