Finding the Fourth Proportional to 2,173.08, 3,246.38 and 1,386.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,173.08 : 3,246.38 = 1,386.82 : x
2. Step 2: Convert to fraction form
   2,173.08/3,246.38 = 1,386.82/x
3. Step 3: Cross multiply
   2,173.08x = 3,246.38 × 1,386.82
4. Step 4: Simplify right side
   2,173.08x = 4,502,144.71
5. Step 5: Solve for x
   x = 4,502,144.71/2,173.08
6. Step 6: Final answer
   x = 2,071.78