Finding the Fourth Proportional to 2,126.05, 3,187.86 and 1,137.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,126.05 : 3,187.86 = 1,137.65 : x
2. Step 2: Convert to fraction form
   2,126.05/3,187.86 = 1,137.65/x
3. Step 3: Cross multiply
   2,126.05x = 3,187.86 × 1,137.65
4. Step 4: Simplify right side
   2,126.05x = 3,626,648.72
5. Step 5: Solve for x
   x = 3,626,648.72/2,126.05
6. Step 6: Final answer
   x = 1,705.82