Finding the Fourth Proportional to 1,729.71, 2,388.20 and 1,281.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,729.71 : 2,388.20 = 1,281.69 : x
2. Step 2: Convert to fraction form
   1,729.71/2,388.20 = 1,281.69/x
3. Step 3: Cross multiply
   1,729.71x = 2,388.20 × 1,281.69
4. Step 4: Simplify right side
   1,729.71x = 3,060,925.65
5. Step 5: Solve for x
   x = 3,060,925.65/1,729.71
6. Step 6: Final answer
   x = 1,769.62