Finding the Fourth Proportional to 1,238.22, 1,707.46 and 1,061.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.22 : 1,707.46 = 1,061.79 : x
2. Step 2: Convert to fraction form
   1,238.22/1,707.46 = 1,061.79/x
3. Step 3: Cross multiply
   1,238.22x = 1,707.46 × 1,061.79
4. Step 4: Simplify right side
   1,238.22x = 1,812,963.95
5. Step 5: Solve for x
   x = 1,812,963.95/1,238.22
6. Step 6: Final answer
   x = 1,464.17