Finding the Fourth Proportional to 2,107.77, 2,909.55 and 1,886.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.77 : 2,909.55 = 1,886.34 : x
2. Step 2: Convert to fraction form
   2,107.77/2,909.55 = 1,886.34/x
3. Step 3: Cross multiply
   2,107.77x = 2,909.55 × 1,886.34
4. Step 4: Simplify right side
   2,107.77x = 5,488,386.25
5. Step 5: Solve for x
   x = 5,488,386.25/2,107.77
6. Step 6: Final answer
   x = 2,603.88