Finding the Fourth Proportional to 2,386.31, 3,579.32 and 1,418.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.31 : 3,579.32 = 1,418.57 : x
2. Step 2: Convert to fraction form
   2,386.31/3,579.32 = 1,418.57/x
3. Step 3: Cross multiply
   2,386.31x = 3,579.32 × 1,418.57
4. Step 4: Simplify right side
   2,386.31x = 5,077,490.98
5. Step 5: Solve for x
   x = 5,077,490.98/2,386.31
6. Step 6: Final answer
   x = 2,127.76