Finding the Fourth Proportional to 1,498.80, 2,259.43 and 1,398.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.80 : 2,259.43 = 1,398.45 : x
2. Step 2: Convert to fraction form
   1,498.80/2,259.43 = 1,398.45/x
3. Step 3: Cross multiply
   1,498.80x = 2,259.43 × 1,398.45
4. Step 4: Simplify right side
   1,498.80x = 3,159,692.15
5. Step 5: Solve for x
   x = 3,159,692.15/1,498.80
6. Step 6: Final answer
   x = 2,108.15