Finding the Fourth Proportional to 2,506.18, 3,458.38 and 1,387.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,506.18 : 3,458.38 = 1,387.05 : x
2. Step 2: Convert to fraction form
   2,506.18/3,458.38 = 1,387.05/x
3. Step 3: Cross multiply
   2,506.18x = 3,458.38 × 1,387.05
4. Step 4: Simplify right side
   2,506.18x = 4,796,936.02
5. Step 5: Solve for x
   x = 4,796,936.02/2,506.18
6. Step 6: Final answer
   x = 1,914.04