Finding the Fourth Proportional to 1,729.56, 2,385.80 and 1,066.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,729.56 : 2,385.80 = 1,066.28 : x
2. Step 2: Convert to fraction form
   1,729.56/2,385.80 = 1,066.28/x
3. Step 3: Cross multiply
   1,729.56x = 2,385.80 × 1,066.28
4. Step 4: Simplify right side
   1,729.56x = 2,543,930.82
5. Step 5: Solve for x
   x = 2,543,930.82/1,729.56
6. Step 6: Final answer
   x = 1,470.85