Finding the Fourth Proportional to 2,140.78, 3,206.69 and 1,360.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140.78 : 3,206.69 = 1,360.38 : x
2. Step 2: Convert to fraction form
   2,140.78/3,206.69 = 1,360.38/x
3. Step 3: Cross multiply
   2,140.78x = 3,206.69 × 1,360.38
4. Step 4: Simplify right side
   2,140.78x = 4,362,322.76
5. Step 5: Solve for x
   x = 4,362,322.76/2,140.78
6. Step 6: Final answer
   x = 2,037.72