Finding the Fourth Proportional to 2,506.37, 3,458.72 and 1,387.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,506.37 : 3,458.72 = 1,387.28 : x
2. Step 2: Convert to fraction form
   2,506.37/3,458.72 = 1,387.28/x
3. Step 3: Cross multiply
   2,506.37x = 3,458.72 × 1,387.28
4. Step 4: Simplify right side
   2,506.37x = 4,798,225.20
5. Step 5: Solve for x
   x = 4,798,225.20/2,506.37
6. Step 6: Final answer
   x = 1,914.42