Finding the Fourth Proportional to 2,109.30, 3,166.35 and 1,244.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.30 : 3,166.35 = 1,244.10 : x
2. Step 2: Convert to fraction form
   2,109.30/3,166.35 = 1,244.10/x
3. Step 3: Cross multiply
   2,109.30x = 3,166.35 × 1,244.10
4. Step 4: Simplify right side
   2,109.30x = 3,939,256.04
5. Step 5: Solve for x
   x = 3,939,256.04/2,109.30
6. Step 6: Final answer
   x = 1,867.57