Finding the Fourth Proportional to 1,401.30, 2,100.06 and 670.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.30 : 2,100.06 = 670.14 : x
2. Step 2: Convert to fraction form
   1,401.30/2,100.06 = 670.14/x
3. Step 3: Cross multiply
   1,401.30x = 2,100.06 × 670.14
4. Step 4: Simplify right side
   1,401.30x = 1,407,334.21
5. Step 5: Solve for x
   x = 1,407,334.21/1,401.30
6. Step 6: Final answer
   x = 1,004.31