Finding the Fourth Proportional to 1,301.72, 1,950.99 and 685.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,301.72 : 1,950.99 = 685.04 : x
2. Step 2: Convert to fraction form
   1,301.72/1,950.99 = 685.04/x
3. Step 3: Cross multiply
   1,301.72x = 1,950.99 × 685.04
4. Step 4: Simplify right side
   1,301.72x = 1,336,499.50
5. Step 5: Solve for x
   x = 1,336,499.50/1,301.72
6. Step 6: Final answer
   x = 1,026.71