Finding the Fourth Proportional to 1,729.50, 2,387.61 and 1,066.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,729.50 : 2,387.61 = 1,066.71 : x
2. Step 2: Convert to fraction form
   1,729.50/2,387.61 = 1,066.71/x
3. Step 3: Cross multiply
   1,729.50x = 2,387.61 × 1,066.71
4. Step 4: Simplify right side
   1,729.50x = 2,546,887.46
5. Step 5: Solve for x
   x = 2,546,887.46/1,729.50
6. Step 6: Final answer
   x = 1,472.61