Finding the Fourth Proportional to 1,681.76, 2,308.38 and 1,491.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,681.76 : 2,308.38 = 1,491.08 : x
2. Step 2: Convert to fraction form
   1,681.76/2,308.38 = 1,491.08/x
3. Step 3: Cross multiply
   1,681.76x = 2,308.38 × 1,491.08
4. Step 4: Simplify right side
   1,681.76x = 3,441,979.25
5. Step 5: Solve for x
   x = 3,441,979.25/1,681.76
6. Step 6: Final answer
   x = 2,046.65