Finding the Fourth Proportional to 1,404.29, 2,103.10 and 708.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.29 : 2,103.10 = 708.77 : x
2. Step 2: Convert to fraction form
   1,404.29/2,103.10 = 708.77/x
3. Step 3: Cross multiply
   1,404.29x = 2,103.10 × 708.77
4. Step 4: Simplify right side
   1,404.29x = 1,490,601.90
5. Step 5: Solve for x
   x = 1,490,601.90/1,404.29
6. Step 6: Final answer
   x = 1,061.47