Finding the Fourth Proportional to 1,729.61, 2,386.09 and 1,066.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,729.61 : 2,386.09 = 1,066.22 : x
2. Step 2: Convert to fraction form
   1,729.61/2,386.09 = 1,066.22/x
3. Step 3: Cross multiply
   1,729.61x = 2,386.09 × 1,066.22
4. Step 4: Simplify right side
   1,729.61x = 2,544,096.88
5. Step 5: Solve for x
   x = 2,544,096.88/1,729.61
6. Step 6: Final answer
   x = 1,470.91