Finding the Fourth Proportional to 1,401.96, 2,100.48 and 670.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.96 : 2,100.48 = 670.56 : x
2. Step 2: Convert to fraction form
   1,401.96/2,100.48 = 670.56/x
3. Step 3: Cross multiply
   1,401.96x = 2,100.48 × 670.56
4. Step 4: Simplify right side
   1,401.96x = 1,408,497.87
5. Step 5: Solve for x
   x = 1,408,497.87/1,401.96
6. Step 6: Final answer
   x = 1,004.66