Finding the Fourth Proportional to 3,686.61, 5,087.51 and 2,114.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686.61 : 5,087.51 = 2,114.69 : x
2. Step 2: Convert to fraction form
   3,686.61/5,087.51 = 2,114.69/x
3. Step 3: Cross multiply
   3,686.61x = 5,087.51 × 2,114.69
4. Step 4: Simplify right side
   3,686.61x = 10,758,483.23
5. Step 5: Solve for x
   x = 10,758,483.23/3,686.61
6. Step 6: Final answer
   x = 2,918.26