Finding the Fourth Proportional to 2,107.56, 2,909.78 and 1,886.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.56 : 2,909.78 = 1,886.12 : x
2. Step 2: Convert to fraction form
   2,107.56/2,909.78 = 1,886.12/x
3. Step 3: Cross multiply
   2,107.56x = 2,909.78 × 1,886.12
4. Step 4: Simplify right side
   2,107.56x = 5,488,194.25
5. Step 5: Solve for x
   x = 5,488,194.25/2,107.56
6. Step 6: Final answer
   x = 2,604.05