Finding the Fourth Proportional to 1,401.89, 2,101.81 and 708.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.89 : 2,101.81 = 708.24 : x
2. Step 2: Convert to fraction form
   1,401.89/2,101.81 = 708.24/x
3. Step 3: Cross multiply
   1,401.89x = 2,101.81 × 708.24
4. Step 4: Simplify right side
   1,401.89x = 1,488,585.91
5. Step 5: Solve for x
   x = 1,488,585.91/1,401.89
6. Step 6: Final answer
   x = 1,061.84