Finding the Fourth Proportional to 2,477.36, 3,418.72 and 1,358.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477.36 : 3,418.72 = 1,358.31 : x
2. Step 2: Convert to fraction form
   2,477.36/3,418.72 = 1,358.31/x
3. Step 3: Cross multiply
   2,477.36x = 3,418.72 × 1,358.31
4. Step 4: Simplify right side
   2,477.36x = 4,643,681.56
5. Step 5: Solve for x
   x = 4,643,681.56/2,477.36
6. Step 6: Final answer
   x = 1,874.45