Finding the Fourth Proportional to 1,637.15, 2,258.89 and 1,077.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,637.15 : 2,258.89 = 1,077.71 : x
2. Step 2: Convert to fraction form
   1,637.15/2,258.89 = 1,077.71/x
3. Step 3: Cross multiply
   1,637.15x = 2,258.89 × 1,077.71
4. Step 4: Simplify right side
   1,637.15x = 2,434,414.35
5. Step 5: Solve for x
   x = 2,434,414.35/1,637.15
6. Step 6: Final answer
   x = 1,486.99