Finding the Fourth Proportional to 2,447.02, 3,377.12 and 1,398.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,447.02 : 3,377.12 = 1,398.88 : x
2. Step 2: Convert to fraction form
   2,447.02/3,377.12 = 1,398.88/x
3. Step 3: Cross multiply
   2,447.02x = 3,377.12 × 1,398.88
4. Step 4: Simplify right side
   2,447.02x = 4,724,185.63
5. Step 5: Solve for x
   x = 4,724,185.63/2,447.02
6. Step 6: Final answer
   x = 1,930.59