Finding the Fourth Proportional to 2,488.50, 3,435.21 and 1,557.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.50 : 3,435.21 = 1,557.54 : x
2. Step 2: Convert to fraction form
   2,488.50/3,435.21 = 1,557.54/x
3. Step 3: Cross multiply
   2,488.50x = 3,435.21 × 1,557.54
4. Step 4: Simplify right side
   2,488.50x = 5,350,476.98
5. Step 5: Solve for x
   x = 5,350,476.98/2,488.50
6. Step 6: Final answer
   x = 2,150.08