Finding the Fourth Proportional to 1,807.36, 2,707.83 and 1,258.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,807.36 : 2,707.83 = 1,258.47 : x
2. Step 2: Convert to fraction form
   1,807.36/2,707.83 = 1,258.47/x
3. Step 3: Cross multiply
   1,807.36x = 2,707.83 × 1,258.47
4. Step 4: Simplify right side
   1,807.36x = 3,407,722.82
5. Step 5: Solve for x
   x = 3,407,722.82/1,807.36
6. Step 6: Final answer
   x = 1,885.47