Finding the Fourth Proportional to 2,140.97, 2,954.50 and 1,196.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140.97 : 2,954.50 = 1,196.78 : x
2. Step 2: Convert to fraction form
   2,140.97/2,954.50 = 1,196.78/x
3. Step 3: Cross multiply
   2,140.97x = 2,954.50 × 1,196.78
4. Step 4: Simplify right side
   2,140.97x = 3,535,886.51
5. Step 5: Solve for x
   x = 3,535,886.51/2,140.97
6. Step 6: Final answer
   x = 1,651.53