Finding the Fourth Proportional to 2,490.17, 3,737.56 and 1,258.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.17 : 3,737.56 = 1,258.45 : x
2. Step 2: Convert to fraction form
   2,490.17/3,737.56 = 1,258.45/x
3. Step 3: Cross multiply
   2,490.17x = 3,737.56 × 1,258.45
4. Step 4: Simplify right side
   2,490.17x = 4,703,513.69
5. Step 5: Solve for x
   x = 4,703,513.69/2,490.17
6. Step 6: Final answer
   x = 1,888.83