Finding the Fourth Proportional to 2,114.69, 2,918.69 and 1,230.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.69 : 2,918.69 = 1,230.63 : x
2. Step 2: Convert to fraction form
   2,114.69/2,918.69 = 1,230.63/x
3. Step 3: Cross multiply
   2,114.69x = 2,918.69 × 1,230.63
4. Step 4: Simplify right side
   2,114.69x = 3,591,821.32
5. Step 5: Solve for x
   x = 3,591,821.32/2,114.69
6. Step 6: Final answer
   x = 1,698.51