Finding the Fourth Proportional to 2,140.77, 2,954.28 and 1,196.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140.77 : 2,954.28 = 1,196.60 : x
2. Step 2: Convert to fraction form
   2,140.77/2,954.28 = 1,196.60/x
3. Step 3: Cross multiply
   2,140.77x = 2,954.28 × 1,196.60
4. Step 4: Simplify right side
   2,140.77x = 3,535,087.69
5. Step 5: Solve for x
   x = 3,535,087.69/2,140.77
6. Step 6: Final answer
   x = 1,651.31