Finding the Fourth Proportional to 2,116.69, 2,921.61 and 1,277.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.69 : 2,921.61 = 1,277.42 : x
2. Step 2: Convert to fraction form
   2,116.69/2,921.61 = 1,277.42/x
3. Step 3: Cross multiply
   2,116.69x = 2,921.61 × 1,277.42
4. Step 4: Simplify right side
   2,116.69x = 3,732,123.05
5. Step 5: Solve for x
   x = 3,732,123.05/2,116.69
6. Step 6: Final answer
   x = 1,763.19