Finding the Fourth Proportional to 2,139.08, 3,206.72 and 751.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.08 : 3,206.72 = 751.56 : x
2. Step 2: Convert to fraction form
   2,139.08/3,206.72 = 751.56/x
3. Step 3: Cross multiply
   2,139.08x = 3,206.72 × 751.56
4. Step 4: Simplify right side
   2,139.08x = 2,410,042.48
5. Step 5: Solve for x
   x = 2,410,042.48/2,139.08
6. Step 6: Final answer
   x = 1,126.67