Finding the Fourth Proportional to 2,114.70, 2,918.31 and 1,764.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.70 : 2,918.31 = 1,764.78 : x
2. Step 2: Convert to fraction form
   2,114.70/2,918.31 = 1,764.78/x
3. Step 3: Cross multiply
   2,114.70x = 2,918.31 × 1,764.78
4. Step 4: Simplify right side
   2,114.70x = 5,150,175.12
5. Step 5: Solve for x
   x = 5,150,175.12/2,114.70
6. Step 6: Final answer
   x = 2,435.42