Finding the Fourth Proportional to 1,401.38, 2,102.28 and 670.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.38 : 2,102.28 = 670.82 : x
2. Step 2: Convert to fraction form
   1,401.38/2,102.28 = 670.82/x
3. Step 3: Cross multiply
   1,401.38x = 2,102.28 × 670.82
4. Step 4: Simplify right side
   1,401.38x = 1,410,251.47
5. Step 5: Solve for x
   x = 1,410,251.47/1,401.38
6. Step 6: Final answer
   x = 1,006.33