Finding the Fourth Proportional to 1,729.06, 2,386.43 and 1,057.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,729.06 : 2,386.43 = 1,057.16 : x
2. Step 2: Convert to fraction form
   1,729.06/2,386.43 = 1,057.16/x
3. Step 3: Cross multiply
   1,729.06x = 2,386.43 × 1,057.16
4. Step 4: Simplify right side
   1,729.06x = 2,522,838.34
5. Step 5: Solve for x
   x = 2,522,838.34/1,729.06
6. Step 6: Final answer
   x = 1,459.09